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By 1936 improved DuPont process control produced batches conforming to published reloading data rather than requiring different charge specifications for each batch; [11] and those propellants have remained in production. Non-conforming batches were used to load commercial and military cartridges following traditional testing procedures.
The 6.5-284 has been used extensively in benchrest competitions and is known as an extremely accurate long range round. Using an improved version of the 6.5-284, Rich DeSimone set a 1,000-yard (914.4 m) world record with a 1.564-inch (39.73 mm) group. [ 4 ]
An IMR smokeless powder for reloading The Hagley Museum in Wilmington, Delaware. IMR Legendary Powders is a line of smokeless powders which are popularly used in sporting and military/police firearm cartridges. The initials 'IMR' stand for Improved Military Rifle powder. IMR powders makes a line of various types of smokeless powder suitable for ...
.300 Lapua Magnum.300 Norma Magnum ... .450 Black Powder Express.450/400 Black Powder Express ... Reloading information at Load Data;
This results in a fatter cartridge for the same length, this able to hold more powder while still compatible with a common boltface. Rather than sticking with the .30 caliber bullet the neck was reduced for the “sexier” (by 1962 standards) 7mm to try to keep up with the .280 Remington, 7x64, 7x61 Sharpe and Hart and 7mm Remington Magnum in ...
aka 6.2×57mm RWS. Necked down 6.5×57mm. The 6mm Remington is a carbon copy. 6×62mm Freres 1983 Germany 1 R 6×62mm 3460 2260 0.243 62mm also 6×62mmR, based on 9.3×62mm case. 6mm Lee Navy: 1895 US 0 R 6×60mmSR 2560 1629 0.236 60mm Service cartridge of the United States Navy and Marine Corps from 1895 6 mm PPC: 1975 US R 6.17×38.5mm 3212 ...
The 6.5mm Grendel is an intermediate cartridge jointly designed by British-American armorer Bill Alexander, competitive shooter Arne Brennan (of Houston, Texas) and Lapua ballistician Janne Pohjoispää, as a low-recoil, high-precision rifle cartridge specifically for the AR-15 platform at medium/long range (200–800 yard).
Hodgdon distributed spherical powders HS-5 and HS-6 for shotguns and H110, H335, H380, H414, and H450 for rifles. [10] DuPont added IMR 4895 to their retail distribution line in 1962, and added IMR 4831 in 1973 when supplies of surplus H4831 were exhausted. [11] Hodgdon then acquired newly manufactured H4831 from Nobel Enterprises in Scotland.