.45 Auto Brass: Designed by John Browning, the .45 Auto, or .45 ACP, has been adopted at one point or another by several governments as their official military handgun chambering. It is still popular in the U.S. as a personal defense or target gun.

• 45 Auto, 45 ACP
• Larger Pistol primer
• .892"-.897" O.A.L.

Starline Brass, the manufacture of "America Finest Brass" is located in Sedalia, MO and has developed a reputation for producing some of the highest quality handgun brass available.