I have a Ruger Blackhawk chambered in 45Colt. How much fitting is required to fit a 45ACP cylinder? I could send it to Ruger for a cylinder but am wondering if I found a cylinder on Ebay or Gunbroker, as to what would be involved to make it work. I know there is cylinder endplay, gap to the barrel and timing for the bolt. But what are the odds that one would "drop in"?









