The .45 Colt retains the bullet diameter of its .44 Colt predecessor at .452" ... From bank heists to battlefields, train robbers to shopkeepers, the .45 Colt and the SAA was king.

The bullet was a .454-caliber weighing 255 grains and powered by 40 grains of ... a British artillery officer. The cartridge, .45 Colt, ... Today the MSRP of a Colt SAA is $1,499 for a blue ...

Plus, the .45 Colt was already in military supply lines for the Colt SAA revolvers. Instead of doing that — S&W delivered guns chambered for a new proprietary cartridge, the .45 Schofield, which was ...