Colt New Service,45 colt problem
I have a Colt new service with a four digit serial number. Colt says it was mfg. in 1903. Chambering is 45 colt. My problem is that the cylinder throats slug out at .451 and the barrel slugs out at .454. I thought the gun was all original.
What diameter bullets should I size my cast lead to? They drop from my mold at.454 I don't want to damage the gun but I do want to load and shoot it