Okay, I know this has been bantered around quite a bit. Well, I have one now that came to me NIB, 10-12 years old, and the chambers mouths appear to be undersize and all over the place. What's the best procedure to ream these out to a uniform size (size yet to be determined)? I've shot it already with Ly 454190s and Lee 454255 and no leading, but not very good groups either, but shows some promise. The BD45 sized .451 wouldn't even hit an 8x10 at 15 yds! Nice handgun, but needs a little work. I tried pushing a jacketed .451 thru, and it only went on one of the six. From the front end it would enter the mouth to varying depths. Sure looks to me like it needs a little 'trueing up'. sundog