Oh, well that's delightful to know... lolAbout 3.6gn of Unique, according to some.
When I tried them, they sucked. 6-12" groups at 25 yards.
You can seat them about ¼" above the case mouth and use a taper crimp (or a very light roll crimp that doesn't cut the plating) or seat just below the case mouth and roll crimp.
Is he running them at 3.6 or hotter? I was thinking about putting them at 3.8/9 as I've seen info up to 4.6.My SIL is getting about 3" groups with his S&W M52.
S&W 686-2 6 inch with a super cool non-fluted/ unfluted cylinder.
Unless a fellow is lucky enough to have one of the few Model 52 S&W semi Autos that were designed for bullseye shooters, or one of the few COLT Gold Cup .38 spl 1911's that were sold to keep S&W from stealing the show, most everyone uses these in Revolvers.