9
9.3X62AL
Guest
I size my bullets at throat diameter or within .001"+ of that figure. I have only been able to "build" one revolver to "perfect" dimensioning, and that was more of a "finish" than a "build" per se. I have one of those Ruger Bisley BHs in 45 Colt that came from Ruger "built backwards"--.452" grooves, and throats at .448"-.449". A true One Bullet Wonder, Lyman #454490 FWIW. I honed the throats to .453", use bullets that mic .454", and life is very good now.