.300 Winchester Magnum [SEP] designer
.300 Winchester Magnum
The .300 Winchester Magnum (also known as .300 Win Mag or 300WM) (7.62×67mm) is a belted, bottlenecked magnum rifle cartridge that was introduced by Winchester Repeating Arms Company in 1963. The .300 Winchester Magnum is a magnum cartridge designed to fit in a standard rifle action. It is based on the .375 H&H Magnum, which has been blown out, shortened, and necked down to accept a .30 caliber (7.62 mm) bullet.
The .300 Winchester is extremely versatile and has been
, .264 Winchester Magnum, .270 Winchester, .270 Winchester Short Magnum, .270 Weatherby Magnum, 7mm-08 Remington, 7mm Shooting Times Westerner, .280 Remington, 7mm Remington Magnum, 7×57mm Mauser, 7mm Winchester Short Magnum, .300 Savage, .308 Winchester, .30-06 Springfield, .300 Winchester Short Magnum, .300 Winchester Magnum, .300 Weatherby Magnum, .300 Remington Ultra Magnum, .300 Holland & Holland Magnum, .325 Winchester Short Magnum, .338 Winchester Magnum, .35 Remington, .358 Winchester, .375 Holland & Holland Magnum,