Reaming the .45 Colt Revolver Cylinder Throats

Reaming .45 Colt revolver cylinder throats yields the best possible accuracy for using cast bullet loads

by Wendell Deaner

While it is possible that a .45 Colt revolver with cylinder throats measuring from .002 to .003 inches larger than groove diameter (.454 to .455-inch cylinder throats with .452-inch groove diameters) can give acceptable accuracy with the right cast bullet and load, it is also generally accepted that a revolver with sub-caliber cylinder throats will give accuracy referred to as “lousy.”

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