.45 Auto (aka 45 ACP) 230GR FMJ by Barnaul 50 rounds
This caliber is an American classic. The .45 Auto (aka 45ACP) has been in US military service since 1911 along with the 1911 pistol.
Military use for this caliber may have diminished, but the popularity with US shooters has only risen. 45 Auto is also extremely effective as a self-defense round.