Thanks for the rapid responses.
As much as I’ll say I don’t like Rugers, I have to say that I owned two of ‘em a while back .... a .357, and .44,
I shot the blackhawk with light loads and swaged lead bullets (cheap) and got to where there were very few things I couldn’t hit. Sometimes I even impressed myself. I do realize that I’m a bit older now, but when I grab one of my other pistols, or whatever .... no problems.
You might ask why not a Ruger? I swore I’d never buy a revolver with one of those funky safeties, adjustable sights or anything else that was too far off from an original.
Anyway, once I realized this Uberti had a problem, I slugged the bore and came up with this; bullets are .452 - .453, throats are a consistent .001 - .002 over bullet dia., bore measured; .444 - .451. C-B gap is ~.005 -.006.
I polished the tool marks out of the cone, and there’s never been any excessive leading and no lead spitting, no keyholing, and lockup is nice and tight.
Kind of hard to see the crown very well, but it isn’t exactly smooth, radial tool marks .... worn tool probably, but no obvious dings that I can see.
I’ve been buying my cast SWC “Keith” bullets from Missouri bullets in 255g. I’ve experimented with various powders and loads with no major changes, though the HS-6 did seem to help slightly. I use very little if any crimp.
I did try some factory rounds .... 200g cowboy loads, but those were all over the place. That’s when I began with 255g bullets, which brought the groups (patterns) up a bit, but not tighter.
I barely touched the trigger, as it was pretty smooth as it was.
I realize Uberti doesn’t spend any extra time on these, but it’s just a machine, or mechanism and as such should be fixable like any other. I know that it’s a matter of how much effort and $ it would take. If I was to just give up on this one, and buy something else, I could just end up with another pistol that needs work too.
I have looked into trying to find oversize bullets, but they’re more expensive and I’d have to buy thousands just to place an order, unless someone knows of another source. So, if possible I’d prefer to see what it might take to get this pistol running right and be done with it, instead of depending on buying the oversized bullets from now on. I did ask Missouri about getting a few oversized bullets to try out, but they said they’re really backlogged right now, but that way I could learn if that’s where the problem is, before doing anything drastic, and even more expensive.