.44 Cal. Revolver Ball Size .451 or .454 | The Firearms Forum
Nov 26, 2013· Go with the .454 balls. Use .454 for all .44-caliber cap and ball revolvers, except the Ruger Old Army which requires .457 inch. The .454 balls don''t require very little more effort to seat, compared to .451 balls, but give a better seal. The larger ball, upon seating, will create a wider band around the circumference of the ball.