steve696-

Just be aware that .45 ACP barrels have different rifling in them than the .45 Colt. It is much shallower for hardball, and while most Smith .45 ACP revos will shoot great, if you're a cast bullet shooter you'll be better off with the correct barrel. Also, the twist might be a bit different in an ACP barrel. Just something to consider.

I second having either Bowen, or Clements re-bore a .44 barrel and roll mark it, or if you really like the lazer engraving, ask them if they can do it for you. If not, maybe S&W would do it after you get the barrel re-bored and installed by one of those guys. I figure they owe you that much for having to go to a barrel length you really didn't want.