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Source(s): Accurate Powders load guide v3.5 [1] Hodgdon powders achieve approx 100fps less. [ 2 ] The .300 Winchester Magnum (also known as .300 Win Mag or .300 WM ) (7.62×67mmB, 7.62x66BR) is a belted , bottlenecked magnum rifle cartridge that was introduced by the Winchester Repeating Arms Company in 1963.
Source(s): Reloading data at Accurate Powder .300 Remington Short Action Ultra Magnum (also known as 300 RSAUM, 300 RSUM or 300 Rem SAUM) is a .30 caliber short magnum cartridge that is a shortened version of the Remington 300 Ultra Mag, both of which derive from the .404 Jeffery case.
The overall length (OAL) of an ammunition cartridge is a measurement from the base of the brass shell casing to the tip of the bullet, seated into the brass casing. Cartridge overall length, or "COL", is important to safe functioning of reloads in firearms.
Components of a modern bottleneck rifle cartridge. Top-to-bottom: Copper-jacketed bullet, smokeless powder granules, rimless brass case, Boxer primer.. Handloading, or reloading, is the practice of making firearm cartridges by manually assembling the individual components (metallic/polymer case, primer, propellant and projectile), rather than purchasing mass-assembled, factory-loaded ...
The .303/25, sometimes known as the .25/303 is a wildcat centrefire rifle cartridge, based on the .303 British, necked down to fire a .257 projectile, originating in Australia in the 1940s as a cartridge for sporterised rifles, particularly on the Lee–Enfield action; similar versions also appeared in Canada around the same time.
The .408 Cheyenne Tactical (designated 408 Chey Tac (10.36×77mm) by the C.I.P.) [3] is a specialized rimless, bottlenecked, centerfire cartridge for military long-range sniper rifles that was developed by Dr. John D. Taylor and machinist William O. Wordman.
Hornady also produces a wide range handloading equipments such as presses, dies, powder measures, scales, case prepping tools, gauges, tumblers/ultrasonic cleaners and other accessories, as well as publishing a reloading data handbook that is currently in its 11th edition.
The flak detachment with 88s proved accurate and versatile in combat against mainly land targets, the high muzzle velocity and large caliber making it an excellent long-range anti-vehicle and anti-bunker weapon. This experience also demonstrated a number of minor problems and potential improvement opportunities.