Imr 4198 load data

1223. Remarks: max load; COL: 1.710"; 37,800 cup. .44 Remington Magnum / .44 Magnum (Hodgdon Pistol Data - IMR Powder) reloading data with 54 loads. Using bullets from LRNFP Cast, Hornady XTP, Nosler JHP, Sierra JHC, Berry's Bullets FP, Speer JHP, LSWC Cast, Speer GDSP, Swift JHP, Beartooth Bullets LFN GC. Powders include …

45-70 Government (Lever Actions) 350 gr Hornady JRN: H4198 Start load = 48.5 gr @ 2036 fps (32,200 CUP) H4198 Max load = 54.0 gr @ 2191 fps (39,300 CUP) Hodgdon 4198 is just slightly slower than IMR4198. Hodgdon H4198 is indeed slightly slower than IMR4198..204 Ruger (IMR Data) reloading data with 22 loads. Using bullets from Hornady V-Max, Berger hollowpoint, Berger hollowpoint boat-tail. Powders include IMR ... IMR: IMR-4198: Subscribe: 3725: Remarks: start load; overall loaded length: 2.250"; 42,700 psi 32: Hornady V-Max: IMR: IMR-4198:.357 Herrett (IMR Pistol Data Maximum Loads) reloading data with 16 loads. Using bullets from Hornady JHP, Sierra FMJ, Hornady SP. Powders include IMRLoad data for powder "IMR 4895". Find load data for IMR 4895 propellant by clicking the button "Loads for this Powder". Originally a military powder featured in the 30-06, IMR 4895 is extremely versatile as a medium burn speed propellant. From the 17 Remington to the 243 Winchester to the 375 H&H Magnum, accuracy and performance are excellent.Jun 19, 2011 · Ken Waters lists a .30-30 combination in his "Pet Loads" anthology for your powder using Ohaus 30170F, a 167gr. gas-check design. 167gr. 30170F; 18.0gr.IMR-4198; 1604fps Varmageddon® VMG 110gr. FB Tipped 2.600" 0.293 0.166. POWDER POWDER CHG. MUZZLE VEL. LOAD DENSITY TYPE GRS. F.P.S. (VOLUME) All cartridge measurements are SAAMI maximum and due to variations from manufacturers actual measurements may vary “ Because Nosler, Inc. has no control over the actual components selected, the …Mar 31, 2015 · Port pressure is the amount of gas that is produced by the burning of the powder that enters the Gas Port. Slower powders produce more "gas" and will have higher port pressure. Faster powders like IMR 4198 produce less gas resulting in less port pressure. To little port pressure and the action suffers. Port pressure is adjusted by changing the ...

46. Location. Mount Airy NC. Mar 4, 2022. #3. I shot it today I'm not sure about the pressure it creates. But I know that with 100gr 2 pellets kicks a lot harder than imr 4198! I have a couple of friends that use imr4198.This is only 0.2 grains more powder than IMR 4198, the highest efficiency powder for the .223. I shoot loads with RL10-X powder in three different .223 Rem. rifles and it performs well in all of them, getting very consistent accuracy with bullet weights ranging from 50 to 63 grains.Reduce by 4 percent. Remarks: max load; compressed; COL: 3.100"; 52,900 cup; will not fit with standard IMR-7828. Reduce by 4 percent. .25-06 Remington (Hodgdon Data Using IMR Powder) reloading data with 122 loads. Using bullets from Hornady V-Max, Barnes TTSX BT, Nosler BT, Speer HP, Hornady GMX, Sierra HPBT, Nosler Part, Hornady SPBT, Swift SP.Remarks: max load; COL: 2.830"; 63,600 psi. .300 Winchester Short Magnum / .300 WSM (Hodgdon Data Using IMR Powder) reloading data with 94 loads. Using bullets from Speer SP, Nosler BT, Hornady SP, …Port pressure is the amount of gas that is produced by the burning of the powder that enters the Gas Port. Slower powders produce more "gas" and will have higher port pressure. Faster powders like IMR 4198 produce less gas resulting in less port pressure. To little port pressure and the action suffers. Port pressure is adjusted by … Development of the .223 Remington began in 1957, and it became commercially available in January 1964, about a month prior to U.S. military adoption of its twin cartridge – Cartridge, 5.56mm Ball, M193 – for the AR-15/M16 rifle. The case was based on a lengthened .222 Remington that offered powder capacity and velocity increases. .243 Winchester (Hodgdon Rifle Data Using IMR Powder) reloading data with 196 loads. Using bullets from Nosler BT LF, Nosler BT, Hornady V-Max, Sierra HP, Barnes VG FB, Speer HP, Hornady HP, Hornady GMX, Sierra BTSP, Barnes TSX, Speer SP, Nosler Part, Speer BTSP, Hornady A-Max, Sierra BTHP.

IMR 4198 is a fast burning rifle powder that gives outstanding performance in cartridges like the 222 Remington, 221 Fireball, 45-70, and 450 Marlin. Varmint shooters with small-bore cartridges love it. Proven metering and necessary elements were added to make it extremely insensitive to hot/cold temperatures. Hawkeye Hunter. IMR 4198 takes up more room than H4198 & will result in compressed loads in the 222 Rem with light bullets at near max loads. Nothing wrong with compressed loads, so just shoot what works best within recommended charges. Using a drop tube or shaking the cases to settle the powder will help.The tire load index, also called the load range, specifies the amount of weight the tire can safely carry when inflated to its optimum pressure. Prior to the adoption of current in...IMR 4198 for .223 / 5.56 questions. I am new to reloading the .223 round. I bought IMR 4198 powder because it was listed on Hodgdon's website as a Military duplicate load. I am using a 55 grain Hornady FMJ bullet with Sellier and Bellot small rifle primers. The load data says a min of 18.8 grains up to a maximum of 20.4.On the other hand 4198 should be great for reduced loads for kids or inexperienced shooters. Look for a reduced load around 2000 fps (you might even be able to go lower). With luck you can probably find an accurate load that doesn't kick much. 4198 is the perfect powder for some of the other cartridges you reload.

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.357 Herrett (IMR Pistol Data Maximum Loads) reloading data with 16 loads. Using bullets from Hornady JHP, Sierra FMJ, Hornady SP. Powders include IMRNotes: case: Remington; bbl: 25"; pr: Remington 7 1/2; NEVER exceed the loads listed. Be Alert: Publisher cannot be responsible for errors in published load data. Wt. .222 Remington (IMR Data) reloading data with 21 loads. Using bullets from Hornady SP, Hornady SPSX, Remington PTD SP. Powders include IMR.Load Data for .458 Socom . Bullet: 576 gr RNFP (ACME) Diameter: 0.458" Powder: IMR 4198 (Improved Military Rifle) Starting Powder: Max Powder: 22.2 gr . Primer: WIN WLP . Case: Starline Brass. Trim Length: 1.575" Cartridge Overall Length: 2.100" Starting Velocity: ...A database of .223 Remington handloads. Support Powderthrough. If you would like to support the site you can donate here:IMR POWDERS IMR 4198 POWDER. FLASH SALE: Geissele SSA X & SSA-E X Triggers priced too low to show - GET YOURS. 1 / 5. IMR POWDERS IMR 4198 POWDER. Powder Size. 1. 8. Brownells # MFR # UPC. $66.99 - $489.99. Out of Stock. NOTIFY ME. Specifications. Please select from the options above to see detailed specifications. Restriction.BCB, i bought imr4198 for my .14 and see that i can use it in my .17FB. I can't find any data for 4198 and 35gr bullets,and, as a novice reloader i have been reluctant to try it. It would save me buying another powder if i could use 4198 for all 3 calibers. Thanks for your reply, Ken.

I probably send 3,000 to 4.000 rounds down range most years with IMR 4198 in the 223, with 40 to 63 grain bullets.. main bullet weights i use..40s, 50s, 52s & 53s, and occasionally 55s...from high volume varmint shooting to target practice ... Load data is always on the conservative side... and accuracy won't be suffering...The IMR brand commitment to bring new and legendary powders to the handloader is a never-ending process. In 2003, Hodgdon Powder Company acquired the IMR brand bringing these prestigious powders under the umbrella that also includes Hodgdon, Winchester, Accurate, Ramshot, and more. Any gunpowder required by handloaders can be sourced through ... Reloading Costs Calculator; Case Crimp Calculator; Energy, Momentum, Power Factor, and Taylor Knock-out Calculators ... Powder: IMR 4198 (Improved Military Rifle ... TESTING THE SUB-SONIC IMR-4198 LOAD FOR THE .300 AAC BLACKOUT USING THE HORNADY 208 GRAIN HPBT MATCH BULLET. Also tested some loads with Hodgdon CFE BLK. Fin...I probably send 3,000 to 4.000 rounds down range most years with IMR 4198 in the 223, with 40 to 63 grain bullets.. main bullet weights i use..40s, 50s, 52s & 53s, and occasionally 55s...from high volume varmint shooting to target practice ... Load data is always on the conservative side... and accuracy won't be suffering...Oct 24, 2015 · 6 posts · Joined 2015. #1 · Oct 24, 2015. I'm looking for load data for 45.70 using 405 grain cast performance bullets (with gas checks) and IMR 4198. This is for an 1895 Marlin GBL rifle. It is for protection from bears so the load must be pretty stout, I assume.The IMR data I've found online on the IMR data page is for jacketed 400 grain ... Reloading Costs Calculator; Case Crimp Calculator; Energy, Momentum, Power Factor, and Taylor Knock-out Calculators ... Powder: IMR 4198 (Improved Military Rifle ... IMR 4198 for .223 / 5.56 questions. I am new to reloading the .223 round. I bought IMR 4198 powder because it was listed on Hodgdon's website as a Military duplicate load. I am using a 55 grain Hornady FMJ bullet with Sellier and Bellot small rifle primers. The load data says a min of 18.8 grains up to a maximum of 20.4..38-55 Winchester / .38-55 WCF Pet Loads for Marlin 1893 & Winchester 1894 Rifles: Warning! Notes: All loads were chronographed in a Winchester Model 1894 rifle with 26-inch barrel.

Hawkeye Hunter. IMR 4198 takes up more room than H4198 & will result in compressed loads in the 222 Rem with light bullets at near max loads. Nothing wrong with compressed loads, so just shoot what works best within recommended charges. Using a drop tube or shaking the cases to settle the powder will help.

Load Data for .458 Socom . Bullet: 576 gr RNFP (ACME) Diameter: 0.458" Powder: IMR 4198 (Improved Military Rifle) Starting Powder: Max Powder: 22.2 gr . Primer: WIN WLP . Case: Starline Brass. Trim Length: 1.575" Cartridge Overall Length: 2.100" Starting Velocity: ...53.94 lb/ft3 | 864 kg/m3. Comprehensive load data for Hodgdon H4198 reloading powder und technical specifications for this propellant.6 posts · Joined 2015. #1 · Oct 24, 2015. I'm looking for load data for 45.70 using 405 grain cast performance bullets (with gas checks) and IMR 4198. This is for an 1895 Marlin GBL rifle. It is for protection from bears so the load must be pretty stout, I assume.The IMR data I've found online on the IMR data page is for jacketed 400 grain ...Printed from Shooter's Reference on 04/24/2024: https://www.shootersreference.com/reloadingdata/204-ruger/If you want to try using the IMR 4198 in your Model 1894 38-55, start with 22 grains, and make sure to check the velocity with a chronograph. You are looking for a load in the 1300 – 1600 fps range that provides consistent velocity and good accuracy. IMR 4198 is not position sensitive, so fillers are not necessary. Bert.375 Winchester - Published Manufacturer Loading Data Shellholders: Hornady #2In the load data that I have seen where 4198 powder is listed, the charge weight is almost identical for both Hogdon and IMR powder using the same bullet/weight. Has anyone tried H4198 for cast loads. I think if I start at the low end and carefully work my way up I should be OK. ... IMR IMR 4198 .224" 2.130" 16.5 2,722 35,900 PSI 18.7 3,017 ...For example, using the 50-grain Speer TNT hollowpoint driven by 20.0 grains of IMR-4198, muzzle velocity was 3,257 fps, while 20.5 grains went 3,326 fps and 21.0 grains produced 3,381 fps. Of the three, the 20.0-grain load gave the lowest extreme spreads and best accuracy, while the 21.0-grain load came in last in both categories.

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$ 62.99 – $ 459.99. IMR 4198 is a fast-burning powder that works in a variety of cartridges, and is especially effective in small-bore cartridge guns, and has seen fantastic …May 10, 2015 ... ... IMR 4198 Powder and 300 grain Hornandy hollow point bullets. Did not have any pressure signs with these 3 loads, DO NOT use this load data ...$ 43.99 – $ 295.99. Quantity. 1 Pound. 8 Pounds. Clear. Add to cart. SKU: N/A Category: IMR Smokeless Powders. Description. Reviews (0) IMR 4198 Smokeless Gun Powder …2,020. Remarks: 40,000 psi. .30 WCF / .30-30 Winchester (IMR Data) reloading data with 10 loads. Using bullets from Sierra Round Nose, Hornady Flat Point. Powders include IMR.Reloading Costs Calculator; Case Crimp Calculator; Energy, Momentum, Power Factor, and Taylor Knock-out Calculators ... Improved Military Rifle IMR 4198. Improved ...2,020. Remarks: 40,000 psi. .30 WCF / .30-30 Winchester (IMR Data) reloading data with 10 loads. Using bullets from Sierra Round Nose, Hornady Flat Point. Powders include IMR..308 Winchester (Hodgdon Data Using IMR Powder) reloading data with 170 loads. Using bullets from Barnes TSX FB, Sierra SP, SinterFire, Speer HP, Nosler BT, Nosler E-Tip, Sierra HPBT, Hornady SP, Barnes TTSX BT, Speer SP, Hornady BTSP, Swift SP, Hornady A-Max.Jan 4, 2019 · The .45-70's straight-wall configuration and large caliber make it extremely easy to handload. But buy a lot of powder; it's a big case. Handloading guides for the .45-70 commonly provide at least two different categories of loadings, one for 19th-century-design firearms and replicas, the other for stronger, modern arms like the post-1973 Marlin Model 1895 or Browning and Ruger falling-block ... .204 Ruger (IMR Data) reloading data with 22 loads. Using bullets from Hornady V-Max, Berger hollowpoint, Berger hollowpoint boat-tail. Powders include IMR ... IMR: IMR-4198: Subscribe: 3725: Remarks: start load; overall loaded length: 2.250"; 42,700 psi 32: Hornady V-Max: IMR: IMR-4198: ….

Nov 25, 2009 · BCB, i bought imr4198 for my .14 and see that i can use it in my .17FB. I can't find any data for 4198 and 35gr bullets,and, as a novice reloader i have been reluctant to try it. It would save me buying another powder if i could use 4198 for all 3 calibers. Thanks for your reply, Ken. 3,870. H-4198 is a shorter stick than IMR. I still feel the need to weigh every charge as it stacks in my measures. So for one thing you'll have a different load density. H Benchmark is a lot easier to work with since it's a true short stick that measures great. 10-07-2013, 12:53 AM #8. smokeywolf. Boolit Master.6 posts · Joined 2015. #1 · Oct 24, 2015. I'm looking for load data for 45.70 using 405 grain cast performance bullets (with gas checks) and IMR 4198. This is for an 1895 Marlin GBL rifle. It is for protection from bears so the load must be pretty stout, I assume.The IMR data I've found online on the IMR data page is for jacketed 400 grain ...IMR POWDERS IMR 4198 POWDER. FLASH SALE: Geissele SSA X & SSA-E X Triggers priced too low to show - GET YOURS. 1 / 5. IMR POWDERS IMR 4198 POWDER. Powder Size. 1. 8. Brownells # MFR # …2,840. Remarks: 100 yard group: 1.40 inches; Winchester Large Rifle primers used throughout. .22-250 Remington Reduced Loads (Handloader Issue #221) reloading data with 12 loads. Using bullets from Nosler Ballistic Tip, Sierra Hornet RN, Sierra Spitzer, Hornady. Powders include Hodgdon, Winchester, IMR.Note that in many cases best accuracy came at or within .5-grain of maximum charge. (Rifle Issue #18 - November, 1971) Be Alert: Publisher cannot be responsible for errors in published load data. Wt. .17 Remington Load Data reloading data with 29 loads. Using bullets from Baker, Lee, Rem. PL, Hornady. Powders include Alliant, IMR, Hodgdon ....38-55 Winchester / .38-55 WCF Pet Loads for Marlin 1893 & Winchester 1894 Rifles: Warning! Notes: All loads were chronographed in a Winchester Model 1894 rifle with 26-inch barrel.Notes: Tromix .458 SOCOM Monster, 16.25-inch barrel. Accuracy is the average of four five-shot groups fired from a sandbag benchrest at 100 yards. Velocity is the average of 10 rounds measured 15 feet from the gun's muzzle. All handloads used Starline cases and CCI 350 primers. All load data should be used with caution.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ... Imr 4198 load data, 7.62x39 / 7.62x39mm Russian (IMR Data) reloading data with 4 loads. Using bullets from Speer SP, Remington Pointed Soft Point "Core-Lokt". Powders include IMR ... IMR: IMR-4198: Subscribe: 2,070: Remarks: 43,600 cup 150: Remington Pointed Soft Point "Core-Lokt" IMR: IMR-4227: Subscribe:, Sierra Hollow Point Boat Tail. IMR. SR-4759. Subscribe. 2,315. Remarks: 52,000 cup. .25-06 Remington (IMR Data) reloading data with 28 loads. Using bullets from Sierra SP, Barnes X Bullet, Sierra Hollow Point Boat Tail. Powders include IMR., 7.62x39 / 7.62x39mm Russian (Hodgdon Load Data) reloading data with 32 loads. Using bullets from Barnes RRLP FB, Speer SP, Hornady SP. Powders include Hodgdon, IMR, Remarks: max load; COL: 2.330"; 61,800 psi. .22-250 Remington (Hodgdon Data Using IMR Powder) reloading data with 128 loads. Using bullets from Nosler LF, Barnes VG FB, Nosler BT, Barnes XBT, Sierra SP, Hornady A-Max, Speer SP, Hornady V-Max, Barnes TAC-X BT. Powders include IMR., IMR 4198 (reduced load) Winchester CCI 200 26.0 1725 30.0 MAXIMUM CHARGE Muzzle Velocity (feet/sec) 30-06 Springfield START CHARGE 2564 2797 2791 2791 2770 2769 2010 WARNING: Improper handloading practices can result in serious personal injury and/or property damage. Refer to the current SPEER® Reloading Manual for handloading …, Remarks: max load; COL: 2.830"; 63,600 psi. .300 Winchester Short Magnum / .300 WSM (Hodgdon Data Using IMR Powder) reloading data with 94 loads. Using bullets from Speer SP, Nosler BT, Hornady SP, …, Nov 8, 2006. 36,941. 5,138. Steven, QuickLOAD indicates that 4198 will work without any serious pressure problems with 40, 50 and 55 grain BTs. Respectively, QL projects maximum loads of 31.5, 30 and 29 grains of H4198 using CIP pressures. CIP is more conservative in this instance than is SAAMI, which may be indicated by the fact that H4198 a ..., Production of IMR powders dates back over 200 years when the company was originally founded by E.I DuPont. Available for use in many reloading applications, the IMR series of powder is trusted by reloaders all across the globe. IMR 4198 is a fast burning rifle powder that gives outstanding performance in cartridges like the 222 Remington, 221 ..., Winchester had a crafty, two-pronged strategy for the .243 Win., and it worked. Winchester thought of the .243 Win. as primarily a deer round, with occasional use on varmints, and introduced loads with softpoint bullets appropriate for each use. The deer load had a 100-grain bullet at a listed 3,070 fps and an 80-grain varmint load at 3,500 fps., Several Hodgdon, IMR, and Winchester powders are appropriate for full-power 223 Rem. handloads, and faster-burning powders like HP38 and Trail Boss can be used for low-velocity specialty loads. Hodgdon offers more than a dozen different propellants for reloading 223/5.56 ammo. Burn rates range from IMR 4198 (fastest) to CFE 223 (slowest)., powders to reach for are IMR or Hodgdon's 4198, SR 4759 and RL 7 for 308 sized cases SR 4759 I use between 20 and 25 grains, or 25 to 30 grains of 4198s or RL 7.. bore diameter and bullet weight pretty well doesn't matter.... you'll find a lot of these parameters right out of Speer manuals, or within parameters of the old IMR reload data sheets.., No data in a new Hodgdon annual, but an undated IMR guide from a while ago shows 30.5gr with Sierra 100gr Spitzer @2720fps & 44000cup. It also shows 27.5gr & a Sierra 120 @2440fps & 45000cup. That's 3gr. for 20gr more bullet weight. Starting at 31 or 32gr. with the 87s sounds logical to me, but it's not my rifle. IMR 3031 might work better., Hawkeye Hunter. IMR 4198 takes up more room than H4198 & will result in compressed loads in the 222 Rem with light bullets at near max loads. Nothing wrong with compressed loads, so just shoot what works best within recommended charges. Using a drop tube or shaking the cases to settle the powder will help., 700-X. Subscribe. 935. Remarks: COL: 1.130"; 32,100 cup. 9mm Luger / 9mm Parabellum (IMR Pistol Data Maximum Loads) reloading data with 15 loads. Using bullets from Rem JHP, Rem MC, Hornady XTP. Powders include IMR., 2185. Remarks: max charge; reduced load. .308 Winchester 125 & 130 GR (Speer Reloading Manual #14) reloading data with 28 loads. Using bullets from Speer. Powders include Alliant, Accurate, IMR, Winchester, Hodgdon, Vihtavuori., IMR 4198 Powder is a fast-burning rifle powder that works well in cartridges including the 222 Remington, 221 Fireball, 45-70, and 450 Marlin. Varmint hunters who use small-bore cartridges love it. It features reliable metering and the temperature-resistant components needed. IMR 4198 For Sale performs exceptionally well in a variety of ..., Remarks: max load; COL: 2.330"; 61,800 psi. .22-250 Remington (Hodgdon Data Using IMR Powder) reloading data with 128 loads. Using bullets from Nosler LF, Barnes VG FB, Nosler BT, Barnes XBT, Sierra SP, Hornady A-Max, Speer SP, Hornady V-Max, Barnes TAC-X BT. Powders include IMR., Web pages on the Internet cache data on users’ computers to expedite loading of the pages. Clearing your browsing history helps to free up disk space on your computer and enhances ..., Reloading Costs Calculator; Case Crimp Calculator; Energy, Momentum, Power Factor, and Taylor Knock-out Calculators ... Improved Military Rifle IMR 4198. Improved ..., powders to reach for are IMR or Hodgdon's 4198, SR 4759 and RL 7 for 308 sized cases SR 4759 I use between 20 and 25 grains, or 25 to 30 grains of 4198s or RL 7.. bore diameter and bullet weight pretty well doesn't matter.... you'll find a lot of these parameters right out of Speer manuals, or within parameters of the old IMR reload data …, 2,515. Remarks: 50,000 PSI; maximum load; compressed powder charge. 6.8 Remington SPC / 6.8mm Remington SPC (IMR Data) reloading data with 20 loads. Using bullets from Barnes TAC-X FB, Speer HP, Barnes X Bullet, Hornady V-Max, Sierra HPBT, Sierra Hollow Point Boat Tail. Powders include IMR., IMR POWDERS IMR 4198 POWDER. FLASH SALE: Geissele SSA X & SSA-E X Triggers priced too low to show - GET YOURS. 1 / 5. IMR POWDERS IMR 4198 POWDER. Powder Size. 1. 8. Brownells # MFR # …, The load data on the IMR website shows an 18.8 starting weight and a 20.4 max charge with a COL of 2.200 . Several of the posts I have read online indicate …, Load data for powder "IMR 4895". Find load data for IMR 4895 propellant by clicking the button "Loads for this Powder". Originally a military powder featured in the 30-06, IMR 4895 is extremely versatile as a medium burn speed propellant. From the 17 Remington to the 243 Winchester to the 375 H&H Magnum, accuracy and performance are excellent., Choose a IMR powder and find the respective load data for it. More about IMR: The IMR brand was created under the DuPont Corporation. In fact, E. I. duPont arrived in America in 1800 determined to make an improved gunpowder and, by 1802, was producing gunpowder in a new plant along the Brandywine River in Wilmington, Delaware (this plant ..., If you want to try using the IMR 4198 in your Model 1894 38-55, start with 22 grains, and make sure to check the velocity with a chronograph. You are looking for a load in the 1300 – 1600 fps range that provides consistent velocity and good accuracy. IMR 4198 is not position sensitive, so fillers are not necessary. Bert, Hodgdon’s temperature-stable Extreme Series H-4198, Accurate’s spherical A-2520 and venerable IMR-3031 (as old as the cartridge itself) provided a 1.02-inch overall group average. H-4198 turned in groups hovering around an inch with all loads, the best .93 inch at 3,608 fps with 25 grains of powder., Wt. Bullet: Powder Manufacturer: Powder: Charge: Velocity (FPS) 240: Speer Mag JSP: IMR: IMR-4198: 49.5: 2,400: Remarks: 265: Hornady FNSP: IMR: IMR-4198: 45.3: 2,066 ..., Load Data for .458 Socom . Bullet: 576 gr RNFP (ACME) Diameter: 0.458" Powder: IMR 4198 (Improved Military Rifle) Starting Powder: Max Powder: 22.2 gr . Primer: WIN WLP . Case: Starline Brass. Trim Length: 1.575" Cartridge Overall Length: 2.100" Starting Velocity: ..., No data in a new Hodgdon annual, but an undated IMR guide from a while ago shows 30.5gr with Sierra 100gr Spitzer @2720fps & 44000cup. It also shows 27.5gr & a Sierra 120 @2440fps & 45000cup. That's 3gr. for 20gr more bullet weight. Starting at 31 or 32gr. with the 87s sounds logical to me, but it's not my rifle. IMR 3031 might work better., IMR 4198 is a fast burning rifle powder that gives outstanding performance in cartridges like the 222 Remington, 221 Fireball, 45-70, and 450 Marlin. Varmint shooters with small-bore cartridges love it. Proven metering and necessary elements were added to make it extremely insensitive to hot/cold temperatures., Production of IMR powders dates back over 200 years when the company was originally founded by E.I DuPont. Available for use in many reloading applications, the IMR series of powder is trusted by reloaders all across the globe. IMR 4198 is a fast burning rifle powder that gives outstanding performance in cartridges like the 222 Remington, 221 ..., .38-55 Winchester / .38-55 WCF (Hodgdon Data) reloading data with 12 loads. Using bullets from Lyman Cast, Barnes JFP. Powders include Hodgdon, IMR