Retumbo Temperature Sensitivity

include H4350, H4831, H1000, and Retumbo. In closing, if you have a supply of powder, just load it up and shoot the varying temps, and document what it does. I have not seen it to be incredibly temp sensitive at all. Whether you’re new to reloading or a seasoned vet, there’s always something more to learn. The reason is the size of the bolt head. Velocity isn't everything, but I'd be very disappointed with only 2660 out of the 7RM. 4350 has been about 50 fps per 20 degrees. Retumbo was the most accurate and Rl-25 was the fastest with the 200 gr eld-x. WE worked up loads for my friends using most of the mentioned powders. It provides outstanding performance from the popular 7mm Rem Mag and 300 Win Mag through the Remington Ultra Mags and 338 Lapua. I'm shooting an FN Ballista 338 Lapua Magnum with 300 grain Sierra Match Kings. Benchmark is one of the Hodgdon Extreme line, which all have a special low temperature sensitivity formulation, while CFE223 is not. Hodgdon H380 Rifle Powder 1#. RL25 I understand can be a touch temperature sensitive so the ADI would win that race. Increase your rifle's performance up to 200 fps without extra chamber pressure, recoil, muzzle blast, temperature sensitivity, fouling, or loss of accuracy. I burn Retumbo with heavy 230 Bergers and it is great but would burn H1000 with lighter. Some powders have large variances and others are formulated to be insensitive to heat and cold. For my 7mag that I run the Berger 168's with I use 69. 308, but doesn't do as well in some. You may have to register before you can post: click the register link above to proceed. The reason longer bullets are used for shooting at longer ranges is because they are sleeker and generally offer an improved ballistic coefficient — they are more aerodynamic and less prone to wind interference and atmospheric drag. i believe that reloader 25 is a double base powder so it will be more sensitive to temp changes. All Temperature powders. Does anyone who's using it just use retumbo load data?? I read that the burn rates are similar. IMR 8208 XBR is an accurate-metering, super short-grained extruded rifle powder was designed expressly for match, varmint, and AR sniper cartridges. For example, Hodgdon's Varget shows great insensitivity to temperature in the. 62mm NATO and the 6mm PPC. Try using the Hodgdon Series of Extreme Powders for better results; these include the following powders: H-322 H-4895 Varget H-4350 H-4831 H-1000 and Retumbo. I am going to use the Sierra 168gr Matchking which the throat has been cut for. I personally shoot a 7mm in competition and have also found Hodgdon's Retumbo to be a very good powder choose for Berger 168gr VLD bullets. Refer to order chart or dropdown box for available powder types. N160 A slow-burning powder well suited to a broad. Note and record the muzzle velocities with these temperature changes. Loading density is perfect for magnums, contributing to superb uniformity. I constantly see on reloading forums where people talk about temperature sensitive powder. from 40 below to 100 above. As far as temp sensitivity with RE 33 goes it is somewhat mitigated by the fact the 195 going 3100 fps is a freakin laser beam. Gun Powder for Sale at AZ Shooter's Supply - #1 Source for cheap Gun Powder and Reloading Supplies!. Most powders go the other way though, heat brings ugly pressure. I'm limited in my choice of brass - only two manufactures that I can find that are making it so I went wit. It shows velocity change per one degree temperature change for different powders. If you want to get the best velocities, you should try RL26, retumbo, or 8133. online i have seen people shooting around the 90 to 92 range but the closest my 7th edition harveys manual lists is 200grs with 81 to 86 grains. from 40 below to 100 above. It provides outstanding performance from the popular 7mm Rem Mag and 300 Win Mag through the Remington Ultra Mags and 338 Lapua. Hodgdon Superformance powder is another high-performance powder that handloaders now have at their disposal for creating fast and accurate loads for a number of cartridges. Hodgdon's H4350 and H4831 are the least temp sensitive in the same cartridges above. Illustration courtesy of Hornady Mfg. I have been using Retumbo extensively for several years in my 6. IE a load shot on a 60 degree day will be 40 fps faster than a load shot on a 20 degree day. (for myself) , I always know my bigger concerns that far out way my powder operating temp. The 338 RUM, and 338 Edge (wich uses 300 RUM brass) can be had for around $80 for 100pc. 5-284 Norma. Confirm this if you can: IMR powders are temperature sensitive. I personally shoot a 7mm in competition and have also found Hodgdon’s Retumbo to be a very good powder choose for Berger 168gr VLD bullets. Norma MRP is a magnum rifle powder that deserves a place on every handloader's shelf. Reloader 22 is a double based powder and along with more energy it is more sensitive to temperature swings. H-1000 is decent and can be driven to 3000 fps but is a bit too slow burning for optimum performance. When you seat bullets, do they go in nicely and with similar force by feel?. Some powders will certainly give you increased pressure with higher temperatures, so it is a good idea to work up a load at, or near, the temperatures you plan to shoot the load. The burn rate is similar to Retumbo. I sold my 300 RUM, so after I get a good load made up, I am putting the Leupold 4. In the cases investigated, barrel temperature is a much stronger variable than powder temperature. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. retumbo This magnum, extruded powder was designed expressly for the really large overbored cartridges such as the 7mm Remington Ultra Magnum, 300 Remington Ultra Magnum, 30-378 Weatherby Magnum, etc. Temperature Sensitivity Coefficient is the slope of this line. Whether you're new to reloading or a seasoned vet, there's always something more to learn. 5-284 Norma. H4831 is not as temp sensitive it is in Hodges extreme line but it is different on the burn chart and will not give you the same accuracy. Temperature sensitivity naturally depends very much on the weapon and on the cartridge. i have pages of loads shot at many different temps. Many of their powders for rifle applications are quite consistent. I am shooting at, followed with maybe the cosign angle if needed. By Chuck Hawks. Could someone please explain to me what exactly is being referred to when this subject comes up? It always seems to be with Alliant powders when i read these post. Try using the Hodgdon Series of Extreme Powders for better results; these include the following powders: H-322 H-4895 Varget H-4350 H-4831 H-1000 and Retumbo. i am shooting a 700 sendaro II 26" barrel shoots under 1/2 " with rl 22 and retumbo but around see level it is slow 2920 ext. This was an unnamed spherical rifle propellant when the late Bruce Hodgdon first used it. it is a single base powder (no nitro) therefore it is more tolerant of temp changes. They were very accurate. Elkhunter111, I did see the "Extreme" logo on my bottle of Varget that shows both the sun & a snowflake indicating better-than-average temperature sensitivity. I found the following info regarding temperature stability of powders available for handloaders. I'm currently using H4831 and H4831sc in my. Unless these powders are hard to obtain in your location there is no reason not to start with one or the other. New, Advanced Alliant Powders: Reloder 23 and Reloder 26. Thanks for sharing excellent data, Pudding+. So for a long time now I have sworn off RL powders with the exception of RL 15 that I use in my 375 h&h and 416 rem. Every powder in the Ramshot family is double-based and spherical shaped. Good loads at 70 degrees turned to sticking bolts at 95. Reloder ® 19 Rifle Powders. 300 rum 2225/retumbo load hi everyone, does anyone have a load window for reloading a 300 rum with 208gr amax. I specifically chose this bullet as it is not a VLD with the sensitivity to loaded length that they can suffer from. Benchrest, F-Class, Tactical, Varmint, High Power precision Shooting. are calling the wind and Elev. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. 56mm, 308 Winchester/7. All my powder charges are weighed out one by one so I can't blame that for my problems. Smokeless heavy magnum rifle powder. I personally shoot a 7mm in competition and have also found Hodgdon’s Retumbo to be a very good powder choose for Berger 168gr VLD bullets. 5 grains shot well, with no pressure signs, and 82 stuck the bolt. 605 @ an average of 3315. So far I've tried RL 26 powder and the bullets sprayed all over the page. Retumbo® H4350® H50BMG® H322® 6430 Vista Drive * Shawnee, KS 66218 * Phone (913) 362-9455 * Fax (913-362-1307 www. As far as temp sensitivity with RE 33 goes it is somewhat mitigated by the fact the 195 going 3100 fps is a freakin laser beam. I've already done quite a bit up to this point in my load development. I've noticed that some chronographs are sensitive to gas or shock wave from the muzzle. 338 Edge and a. The concern with R19 is that I have read it is temperature sensitive which may not be a good thing when moose hunting. This banner text can have markup. From the manual: "… [This] improves the energy and makes it less sensitive to temperature and moisture. i use retumbo in my custom. 375 Snipe Tac. 5 of Retumbo and and it cllocks in at 2950 FPS. IMR7828, and Retumbo worked well, but H1000 seemed to be my best powder in major temp swings. The case was specifically designed to fit long 200- to 225-grain bullets with the ideal amount of temperature stable powders, such as Retumbo and Reloader 26, while still working well with shorter, lighter bullets using 4831 and Reloader 23. Every powder has some measurable temp sensitivity, including H4350 and Varget. Gun Powder for Sale at AZ Shooter's Supply - #1 Source for cheap Gun Powder and Reloading Supplies!. I constantly see on reloading forums where people talk about temperature sensitive powder. The temperature of the ammunition can be a big variable. IMR 4166 performed very similar to Varget, and proved to be fairly insensitive to large swings in temperature. 308, but doesn't do as well in some. A change in temperature can affect the trajectory or 'flight path' of the bullet in two well-known ways: So long as altitude, barometric pressure and humidity remain constant, an increase in air temperature will cause a flatter trajectory due to a lower air density (less collisions with 'air particles' per unit length of flight path). They are not immune to temp sensitivity, but they certainly are much better than other double base, ball/spherical powders. Also may test some CFE 223 as it appears to add about 100 fps or more and also try IMR 4166. At What Temperature is Load Testing Safe? I've spent the winter developing test loads for several of my guns. It provides outstanding performance from the popular 7mm Rem Mag and 300 Win Mag through the Remington Ultra Mags and 338 Lapua. 338 LM) Reloader 25 is a bit too temp sensitive in my experience and too hot for a 225 gr bullet in. 270 Winchester Short Magnum /. This is a true magnum propellant yielding outstanding performance in 6. Is my powder choice temperature insensitive? 3. A Different type of Powder chart Here is a chart I made up, of the 140+ Us powders, it is current as of 2015. of using a Temperature Sensitivity Factor. I sold the rest of it. I didn’t think to look at Sierra’s data on TAC before posting but there is a thread where powder sensitivity to heat is discussed. all my manuals only list 200 and 220 gr projectiles. - If swallowed do NOT induce vomiting. At this point I know I want to try to find an accurate load for Berger's 168gr VLD over Hodgdon's Retumbo powder and I'm now zeroed in on a very specific range of powder weights that seem to be very tolerant of slight pressure variances. 338 Lapua: 7828SC, H1000 & Retumbo. MAGNUM is the ultimate high performance magnum rifle powder. Also if anyone has any input on the temperature sensitivity, I hunt in ND and the temp swings can be quite drastic day to day. 1°F temp change=1fps. By Chuck Hawks. RL17 proved to shoot a full 200 fps faster in this cartridge than either Hodgdon powder used. Unsatisfied with current temperature testing methods, the authors have talked quite a bit about how to carry out a convincing experiment to test velocity variations over temperature but decided to start with an experiment testing velocity variations over different lots of. Looking for 4350 from Hodgdon, 4895 from IMR, #26 from Alliant, Accurate 2200, or Vihtavouri's 320?. Reloader 22 is a double based powder and along with more energy it is more sensitive to temperature swings. 3gr / 120gr SMK / Fed, match primers in a Hornady brass. Provides superb accuarcy in most medium and heavy rifle loads and is the powder of choice for. I would try one of the Hodgdon that is less temp sensitive. This is a discussion on MK 248 MOD 1 specs within the Handloading Techniques forums, part of the Technical category; Hey I know you would know pretty good about the MK 248 MOD 1 round JF. I'm in the final stage of having a. The effects of temperature sensitivity can cause a miss at long range, and unsafe pressures. Less temperature sensitive my h1000 load only has a 12 fps spread. I have tried US-869 powder also and could only get 2,900 fps with the 200 AB. Full text of "Nouveau dictionnaire de poche, frans-espagnol et espagnol-frans : contenant tous les mots des deux langues, dont l'usage est autorisSee other formats. I have seen vision affected by altitude and temperature. In closing, if you have a supply of powder, just load it up and shoot the varying temps, and document what it does. There’s a temperature sensitive paint called Tempilaq that you brush onto a case before you heat it up. Unfortunately, unless you have some older manuals, the data currently available for most Weatherby cartridges, including the 270Wby, is dismal, at best. An excellent choice for lighter to. The issue turns out to be that barrel/chamber temperature has more effect than ambient temperature, and barrel temperatures can get well outside the stabilized temperature range. His is in 7mm, and mine in. 0 Grain velocities available at this time but I did chrony my 88. Hodgdon H4350 has nationally vanished, what now Yes, I know it is more temperature sensitive, but I work my loads up at summer temps and the drop in fps with. URP has a burn rate between 4350 and 4831. This is a discussion on. Temperature sensitivity naturally depends very much on the weapon and on the cartridge. H4350 and H4831sc both give excellent accuracy with less-than-average temp sensitivity and best-in-class ES and SD. Wouldn't worry to much about the temp sensitivity between Hogdon and IMR powders, I would however stay away from the double base powders, ie ball powders and VV-500 series powder. So for a long time now I have sworn off RL powders with the exception of RL 15 that I use in my 375 h&h and 416 rem. And for temp sensitivity, some powders go different ways, Win 748, a very sensitive powder, doesn't change much as temp rises, but when it goes down, things change fast. 0 grain increments (depending on the acceptable ranger for each cartridge) up to the listed book max. The loaded ammo reacts differently to temperature. With a 53 degree change in temperature from his chronograph testing at 70° he may well experience a 100 fps loss in velocity or MORE. Las series del Manual W ashington ® se conocen en todo el mundo como un recurso de alta calidad para estudiantes y residentes por igual y estamos encantados de unirnos a esta prestigiosa serie de publicaciones. This is another of the spherical powders Hodgdon Powder Company and Hornady Manufacturing introduced to answer the frequently asked reloading question: Can I buy the powder used in the Hornady Superformance factory ammunition?. Hodgdon Varget was the second least temperature sensitive powder in this test, with 46 fps of variance in muzzle velocity between temperatures of 25° F and 140° F. Is one more temp insensitive than the other? Retumbo being part of the Extreme line supposedly makes it less sensitive to movement of the mercury, which I see as a good thing when having nearly 100gr cook off next to my face, haha. The 300RUM works well with 180-210gr Bullets, but really shines with the 200gr pills. IMR 8208 XBR is an accurate-metering, super short-grained extruded rifle powder was designed expressly for match, varmint, and AR sniper cartridges. range of Magnums, and large capacity/small bore cartridges like the 6. it is a single base powder (no nitro) therefore it is more tolerant of temp changes. All Temperature powders. I was not very enthused that someone could produce a powder that would shoot better in the. Every powder in the Ramshot family is double-based and spherical shaped. Like most 7mm Magnum cartridges, a bullet weighing around 150 grains is about optimum for all-around use in the 7mm Rem. 5 grains of Retumbo powder. I sold my 300 RUM, so after I get a good load made up, I am putting the Leupold 4. Other Important Information:. I am one of them who don't like Retumbo in my 110BA, to dirty in the Big side) SAMMI spec chamber that Savages uses. By clicking the 'I Agree' button, I understand/accept and will agree to abide by the precautions and warnings outlined below. For me, it was barely faster than Retumbo in that chambering (might be different with an EDGE) and with temp sensitivity issues. The Hodgdon Extreme line of powders are single base, extruded, and coated to be more temp stable. 2gr in the hot weather but I can't say it was absolutely necessary. Good loads at 70 degrees turned to sticking bolts at 95. The loaded ammo reacts differently to temperature. Have used it years ago, but found it to be pretty temperature sensitive. RETUMBO adds 40-100 fps more velocity to these cartridges when compared to other normal magnum powders. I was always trying to push the envelope using new brass to get super sonic velocity at one point. Suppoosedly you can use Hodgdon 8700 data for both of these powders so maybe they are similar burn rates, which is to say, slightly slower than Retumbo. Not many rounds per pound. I always experiment with powders to see which one works best, but powders like RL22,RL25 (I think the Reloader powders are somewhat temperature sensitive) IMR 4350, Retumbo,H1000, and BMG50 powders would all be useable. com Benchmark® H4227® Extruded Rifle Powders SAFETY DATA SHEET March 2015 The following smokeless powders are distributed by Hodgdon Powder Company. 338 calibre Hybrid projectiles. Loads were developed in 70'ish temps and once they rose to around the low to mid 90's they locked up the bolt. Thanks for the input. 5x284's, 300WM, and 338Lapua. There is a great deal of interest in. This is not to my liking but most people claim that accuracy is outstanding! In fact, it seems that RL33 outperforms Retumbo or H1000 in the accuracy department. I am shooting at, followed with maybe the cosign angle if needed. had a guy tell me Retumbo was temp sensitive, well after having ammo sit and bake in the sun on one day then take it to an indoor range the next 40˚ temp swing same loads. It seems that H414 is even more sensitive at higher temperatures. IMR7828, and Retumbo worked well, but H1000 seemed to be my best powder in major temp swings. N165 reloading powder for exceptional long-range performance When you’re aiming for exceptional long-range performance, N165 is your choice of rifle powder!. List of Powders & Their Physical Characteristics I don't know how many other people are like me, but I load on a progressive and I want easy-metering powders. While these projectiles have been available in the U. im trying really hard to just use a couple powders instead of a shelf full. Back in the summer I did some load development with Reloder-22. Have used it years ago, but found it to be pretty temperature sensitive. WE worked up loads for my friends using most of the mentioned powders. I'm about to use the last of it and am considering trying something else. php on line 143 Deprecated: Function create. Also if anyone has any input on the temperature sensitivity, I hunt in ND and the temp swings can be quite drastic day to day. This is a discussion on All Temperature powders within the Reloading forums, part of the Firearm Forum category; I was reading that temperature has little or no effect on these powders, H4198, H322, BENCHMARK, H4895, VARGET, H4350, H4831, H4831SC, H1000, RETUMBO and H550BMG,. i am shooting a 700 sendaro II 26" barrel shoots under 1/2 " with rl 22 and retumbo but around see level it is slow 2920 ext. The Latest In Reloading, Straight To Your Inbox Keep up-to-date on new products, trends and tips from the leader in reloading. That said,I just note what the temperature is when I do load testing,and adjust the loads when needed for different temperatures. This advanced powder for big game hunting features improved slower burning and delivers the high. Cordite, which was the common propellant at the time Rigby designed the case, was extremely sensitive to pressure fluctuations brought on by a change in temperature. It is temp sensitive, but I have also tried it in a. I'll sacrifice some speed for temp insensitivity so am sticking with the single base Hodgdon Extreme powders. I followed Jmden's testing and decided to go no further until I can find a way to deal with temp swings with RL33. Best site for precision rifle accuracy and accurate shooting. 338 LM) Reloader 25 is a bit too temp sensitive in my experience and too hot for a 225 gr bullet in. Data courtesy of Varget. I used Nosler Accubonds in 180 grain. Also may test some CFE 223 as it appears to add about 100 fps or more and also try IMR 4166. ª edición de Manual W ashington ® de Medicina de urgencias. Reloder ® 25 Rifle Powders. 680 loads just a. Every powder has some measurable temp sensitivity, including H4350 and Varget. velocity only varied 15 fps you so unless you know for a fact and have shot the ammo cold and hot don't believe a word. 300 win mag shooting 240 grain sierras, and i plan on wearing that barrel out with retumbo--in other words i like the powder. After I shot the bull I tested the load two more times and realized there is a roughly 1fps/1 degree temperature sensitivity in the powder I'm using. (CAL), a large caliber ammunition facility with two plants. H4831 is not as temp sensitive it is in Hodges extreme line but it is different on the burn chart and will not give you the same accuracy. FWIW, I absolutely love H4831SC. As a medium burn speed propellant, XBR is ideally suited for cartridges like the 223 Remington/5. Home; web; books; video; audio; software; images; Toggle navigation. 605 @ an average of 3315. Most powders go the other way though, heat brings ugly pressure. I still use Reloader 19 for my 243 which is an excellent powder for that caliber but gave up on the 22 long time ago. Living in Montana i have the ability to shot in temps. So pressures and velocity will rise at 100 degrees over that registered at 70. The retumbo is pretty close to max as I started getting sticky bolt/primer flattening around 78. There is a great deal of interest in. Suppoosedly you can use Hodgdon 8700 data for both of these powders so maybe they are similar burn rates, which is to say, slightly slower than Retumbo. We've stockpiled a wealth of information that can help take your craft to the next level. Hodgdon lists as extreme powders: H1000, H50BMG, H4198, H322, H4350, H4895, H4831, H4831SC, Varget, Benchmark, and Retumbo. 0 at 100 yards witch is awesome, except sometimes it just seems to shoot wild opening up to almost 2 inches or more and throwing flyers. 0 grain charge behind a 52 grain bullet gave one hole groups from his 22 caliber wildcat (now called the 22-250), he appropriately named the powder H380. IMRReloading. ª edición de Manual W ashington ® de Medicina de urgencias. Interestingly, their maximum loads are also their most accurate loads:. Provides superb accuarcy in most medium and heavy rifle loads and is the powder of choice for. We found that the Retumbo got the best velocity but stretched out the primer pockets the quickest, RL-25 was great, however we found it to be temp sensitive with the higher loads being non conducive for our area. Hodgdon Powder Co. range of Magnums, and large capacity/small bore cartridges like the 6. Hodgdon Announces New Upgraded Hodgdon Load Data Center. 2015 offers excellent ignition characteristics and shot-to-shot consistency. I then loaded 5 rounds each at half grain increments from 90 to 92. Full text of "Handbook Of Firearms And Ballistics Examining And Interpreting Forensic Evidence Developments In Forensic Science" See other formats. Specific cartridge loads need specific propellant to perform to their ballistic peak. Retumbo was the most accurate and Rl-25 was the fastest with the 200 gr eld-x. Just my impression shooting it mostly in the 60 to 100 degree range. Provides superb accuarcy in most medium and heavy rifle loads and is the powder of choice for. Temperature sensitivity naturally depends very much on the weapon and on the cartridge. com has 223 243 308 6mm 7mm caliber accuracy reloading data. 680 loads just a. Hodgdon Upgraded Reloading Data Resource Hodgdon Powder. So if you do load development in the summer @ 90°, and you hunt when it is 30°, you will get 60fps slower speeds, which will probably push you out of your accuracy node. If you want to get the best velocities, you should try RL26, retumbo, or 8133. I would reccomend to go the H1000/Retumbo route myself for a couple of reasons. Re: Reloader 25 Temperature Sensitivity (???) Just wondering, but do you measure the distance form the chrono to muzzle everytime? If it is your hypothesis that there is a temperature sensitivity with the RL25, perhaps, I would recommend that you measure the temperature of the ammo just before you shoot and create a temperature curve, if it exists. Temp insensitive powders aren't. It is simple to test, take five loads in a cooler out to the range on a hot summer day and record the average velocity of five hot shots and five cold ones. range of Magnums, and large capacity/small bore cartridges like the 6. This banner text can have markup. Refer to order chart or dropdown box for available powder types. Ramshot Smokeless Powder is newly manufactured, meaning it hasn't been pulled from loaded ammunition and it's not military surplus powder. Accurate 2015 is a fast burning, single-base, extruded rifle powder that performs very well in small to medium varmint calibers (223 Rem, 204 Ruger). If sticky, you have exceeded where you want to be - in warmer temps the issues could be more severe if using a temp sensitive powder, and your brass will not last as long before the primer pockets start to open. Just tested it, dont really shoot that powder in any of the calibers I mentioned. I'm looking for specific references OR experienes with IMR-4831 and IMR-4895 in temperatures under 32 degrees F. Specific cartridge loads need specific propellant to perform to their ballistic peak. RETUMBO adds 40-100 fps more velocity to these cartridges when compared to other normal magnum powders. Retumbo, and. i am shooting a 700 sendaro II 26" barrel shoots under 1/2 " with rl 22 and retumbo but around see level it is slow 2920 ext. Have used it years ago, but found it to be pretty temperature sensitive. Whether you're new to reloading or a seasoned vet, there's always something more to learn. Thank you Cody, very informative test. e barrel/projectile fit, length of bullet bearing surface, bullet weight, cold tight barrel to hot expanded barrel, etc. Retumbo was good but got as good as 1000, RL-25 was awesome, but at the load he was shooting had temp sensitivity issues, going from mild to wild with a 20 degree shift up. 25-06 Rem and a variety of belted Magnums. 280 is the last load for the H4831. I also seen that some were having pressure spikes with n570 when. 50 BMG than the VhitiVouri 20N29. I do not have enough data yet for RL 17 to say for sure. 2225 is Hogdon Retumbo and is one of their "Extreme" range of powders. This is a true magnum propellant yielding outstanding performance in 6. 5 Grain RSM/300 SMK/Lapua Brass/215M/2. I sold my 300 RUM, so after I get a good load made up, I am putting the Leupold 4. That said,I just note what the temperature is when I do load testing,and adjust the loads when needed for different temperatures. Don't be afraid of Reloder 33. And if you do a search here many many people are very happy with H-322. I know the powders by Hodgdon, such as H-1000, 4831, 4350, are not sensitive. 0 Grain velocities available at this time but I did chrony my 88. We've stockpiled a wealth of information that can help take your craft to the next level. For one, its an extreme series powder and is not temp sensitive, unlike RL25. Look forward to hearing your suggestions. Unfortunately Varget and H4350 are still out, but Natchez has. 015" off the lands. For two, there pretty clean burning powders, also pretty good for lot to lot consistency, (a lot better then RL25 anyways). I was not very enthused that someone could produce a powder that would shoot better in the. Every powder in the Ramshot family is double-based and spherical shaped. Paya Frank. 338″ caliber cartridges for long range shooting. 5 Grain RSM/300 SMK/Lapua Brass/215M/2. * (See burn rate chart. Gun Powder for Sale at AZ Shooter's Supply - #1 Source for cheap Gun Powder and Reloading Supplies!. Others have seemed to have different results. So while there is a definite and real benefit to temperature insensitive powders like Hodgdon's Extreme line, and others like Alliant Reloader 15, Ramshot TAC and others, they probably should be considered more "temperature resistant" than truly temperature insensitive -. STOMP442 STOMP442 59 retumbo over 215 match 3100 FPS. Brass for the Lapua is commonly found for around $195 for 100pc. of using a Temperature Sensitivity Factor. Illustration courtesy of Hornady Mfg. That's 60 fps for about a 50 degree temperature rise. I constantly see on reloading forums where people talk about temperature sensitive powder. Ramshot Smokeless Powder is newly manufactured, meaning it hasn't been pulled from loaded ammunition and it's not military surplus powder. In closing, if you have a supply of powder, just load it up and shoot the varying temps, and document what it does. Thanks for the input. It is an ideal combination when used with the 270 Win,. My 30-378 is running 210 Bergers at 3250 fps and puts three bullets through the same hole at 100 yards. 21 MAG PRO 1. Reloder ® 25 Rifle Powders. I had frequently searched the internet for a relatively comprehensive list, and short of a few forum entries by folks based on personal experience there was nothing out there. I started at the listed minimum and increased in 0. include H4350, H4831, H1000, and Retumbo. The reloader line of powder is great powder, just a little more temp sensitive. 2gr in the hot weather but I can't say it was absolutely necessary. Hodgdon Smokeless Powder 8 LBS, Reloading Equipment, Tools, Components, and Accessories: Midsouth Shooters offers a great selection of Hodgdon Smokeless Powder 8 Lbs for your reloading needs. Deprecated: Function create_function() is deprecated in /home/clients/f93a83433e1dd656523691215c9ec83c/web/dlo2r/qw16dj. If you don't have big temp swings it should be fine. These new IMR Enduron powders were designed to meet the same temperature independent requirements as the Hodgdon Extreme family of powders, which include: H4198, H322, BENCHMARK, H4895, VARGET, H4350, H4831, H4831SC, H1000, RETUMBO and H550BMG. Cordite, which was the common propellant at the time Rigby designed the case, was extremely sensitive to pressure fluctuations brought on by a change in temperature. I know the powders by Hodgdon, such as H-1000, 4831, 4350, are not sensitive. A bud and I recently cobbled up a couple of Remington Ultra Mags. Norma MRP is a magnum rifle powder that deserves a place on every handloader's shelf. Hodgdon lists as extreme powders: H1000, H50BMG, H4198, H322, H4350, H4895, H4831, H4831SC, Varget, Benchmark, and Retumbo.