The .45 Winchester Magnum is a .45 caliber rimless cartridge intended for use in semi-automatic pistols. The cartridge is an externally lengthened .45 ACP with a thicker web to withstand higher operating pressures.

The .45 Win Mag is based on a lengthened .45 ACP case that has a lot more powder added, as well as a larger projectile, meaning that velocity, accuracy, and kinetic energy on target are all dramatically increased from the .45ACP. OF course, so is the recoil.

Taurus Judge T.O.R.O. Magnum .410 Gauge/.45 Long Colt Revolver 3" 5rds, Black - Heavy-Duty Revolver for Home Defense - 24410P31MAG

The .45 ACP (not to be confused with .45 Colt) cartridge is a very popular caliber due to its low velocity and relatively high stopping power. This caliber is associated most with the Colt M1911 , logically, as ACP literally means 'Automatic Colt Pistol'.

The .45 Winchester Magnum is a .45 caliber rimless cartridge intended for use in semi-automatic pistols. The cartridge is externally a lengthened .45 ACP with a thicker web to withstand higher operating pressures.

This 45 W.M. load also fed/cycled reliably in our test pistol. It gave the necessary accuracy to hunt deer sized critters out to 75 yards, which means that self-defense on big critters @ less than 5 yards, is no issue.

At one time, Winchester offered two factory load for their .45 Magnum, a Supreme load using a 260 grain Nosler Partition Gold bullet and a Super-X load using a 260 grain JHP bullet. Both claimed a muzzle velocity (MV) of 1200 fps and muzzle energy (ME) of 831 ft. lbs., as measured from a five inch test barrel.

The .45 Black Powder Magnum (also known as .45 BPM and .45-55 Walker) is a black-powder firearm round. It is a wildcat cartridge of the .45 Colt family.

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