The Firing Line Forums - View Single Post - What is the difference between .45 Colt and .45 ACP Bullets

MADISON · May 20, 2007, 10:06 AM

Before WW-II the .45 Long Colt diameter was .454.
After WW-II the diameter is .452 for both calibers.

May 20, 2007, 10:06 AM	#7
MADISON Senior Member Join Date: January 1, 2000 Location: Roanoke, Virginia Posts: 2,678	45LC and 45 ACP bullets Before WW-II the .45 Long Colt diameter was .454. After WW-II the diameter is .452 for both calibers.