the pilots aren't too expensive...i think ำ or so for a package of them ranging in size from .448 to .451 or so??? compare this cost to a new cylinder...or a 趁 unchambered cylinder from bowen. and i have also had bad experiences with some gunsmiths (had one literally RUIN a NIB super blackhawk years ago and he went ballistic when i told him i wouldn't pay for it) so i say buy the right tools and do it at home if able. the reamer should be useful for a long time too since i'm not sure why anybody would actually want to buy a sixgun chambered for anything other than .45 colt...