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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.
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]
For open-country hunting of deer and pronghorn, the .284 Winchester loaded with the Speer 130-grain (8.4 g) spitzer at 3,100 ft/s (940 m/s) is adequate, even in a short-action rifle. Larger game calls for bullets weighing from 150 to 160 grains (10 g). H4831, H450, H4350, H414, IMR-4350, and IMR-4831 are excellent powders. [4]
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The .308 Marlin Express was designed to produce performance similar to the .308 Winchester. This would give lever-action hunters improved performance over their .30-30 Winchester rounds. The table below shows how the rounds compare. Note that reloading data for 160-grain (10 g) bullets for some of the cartridges is not available.
President-elect Donald Trump has endorsed a line of guitars, following up on the Bibles, sneakers, watches, photo books and cryptocurrency ventures launched during his third White House campaign.
"Full House" actor Dave Coulier is keeping a positive outlook following his cancer diagnosis. On Friday, Coulier shared a photo of himself at a chemotherapy appointment along with a message that ...