Went to the range today and learned some lessons, or not... Took the Single-Seven, .327 Federal and both Federal American Eagle factory loads, the 85 gr. and 100 gr. bulleted loads. I am pretty much decided to load the 100 gr. XTP so I was using the 100 gr. load to zero/sight-in. I was also using the opportunity to see how much the 85 gr. load POI would differ from the 100 gr. load and to just get some trigger time. A couple of interesting things...
First, this gun has a couple of screws loose, the ejector rod housing screw and the screw in front of the trigger guard both shot loose. I was having to tighten them after every cylinder full. THAT I can fix.
Second was how well it grouped, or didn't. I realize I am not the best shot in the world, my eyes are starting to fail me (cataracts) and I'm certainly not infallible! While I didn't have time to shoot groups with individual chambers it certainly seems as if certain of the individual chambers shoot very well with many cloverleafs but those groups are separated by at least two calibers from one another. Some chambers don't seem to quite stand up to that. My best group from a cylinder-full (7-shots) was about 3½ in a bit of an oval. This at 25-yards doesn't seem so good.
Third, I feel as if it is spitting a bit but it isn't, it is just a LOT of gas working there. It looks as if there is some top-strap cutting but I never bothered to look or simply can't remember if these things have a relief cut there. One thing for certain, the burn rings one often sees on the front of stainless cylinders (due to the contrast) cover the whole front of the cylinder and extend in a neat little pattern to the side of the cylinder. Since this pattern varies slightly from chamber to chamber it is clear that each chamber's relationship to the barrel is a bit different, one very much so. Discoloring due to heat extends to the base pin where it is exposed between the frame and face of the cylinder.
Had a great time, of course.