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replaced 17 1/2; [18] for mid-range loads and medium sporting and military cartridges like the .257 Roberts, .30-30 and .348 Winchester [11] 4064 1935 standard replaced 1015; [19] for magnum capacity cartridges like the .250-3000 Savage, .35 Whelen and .375 H&H Magnum [11] 4198 1935 thin
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 ...
The C was to indicate the powder burned "cooler" than traditional Improved Military Rifle (IMR) powders. [4] In 1949, he began acquisition of powder salvaged from disassembled Oerlikon 20mm cannon cartridges. This powder resembled IMR 4350 in appearance, and with a slower burning rate, was initially marketed as "4350 Data", and later as 4831. [5]
The standard military cartridge and the currently available Prvi Partizan can be duplicated using modern smokeless powders branded by Hodgdon such as H 4831, H4064, and IMR 4895. [5] Data includes options for .264 and .267 sized projectiles. Appropriate sized bullets (.267–.268 in.) would have to be hand cast using bullet moulds.
H335 was surplus Olin WC844 [11] for full-charge loads in the .223 Remington and .308 Winchester. [14] H380 was Olin WC852 [11] for full-charge loads in the .30-06 Springfield. [14] H414 was introduced in 1967 [1] for full-charge loads in the .270 Winchester and .30-06 Springfield [14] H450 was for large capacity and magnum rifle cartridges. [14]
The tracer compound contains composition R 321 which is 16% polyvinyl chloride, 26% magnesium powder, and 52% strontium nitrate. [8] The M62 is an orange-tipped 7.62×51mm NATO tracer consisting of a 142 gr bullet with 46 grains of WC 846 powder. The tracer compound contains composition R 284 which is 17% polyvinyl chloride, 28% magnesium ...
The .308 Winchester has a 3.64 mL (56 gr H 2 O) cartridge case capacity. [9] The exterior shape of the case was designed to promote reliable case feeding and extraction in bolt-action rifles and machine guns alike, under extreme conditions. .308 Winchester maximum C.I.P. cartridge dimensions. All dimensions in millimeters (mm) and inches.
The data are all for barrels with a twist rate of 1 turn in 10 inches (250 mm) which is needed to stabilize the heaviest bullets. The higher muzzle velocities reported by Nosler for 165 grains (10.7 g) and heavier bullets use loads employing a slow-burning, double-base powder (Alliant Reloder 22). [citation needed]