Not sure what was wrong with that barrel, but I've never had a T/C barrel that wouldn't do that or better @ 100 yards and often MOA. My MGM made 7-30 Waters and 218 Bee barrels will do sub 1" @ 100 all day long. Some factory 357 barrels have been known to have a long leade, and I know one guy who can chamber 360 DW brass in his factory 357 barrel, but even that barrel will shoot the mags fairly accurately. I would look into MGM if you are wanting a barrel made. You can get a custom MGM barrel, 13" or shorter, for $250 bucks. That is less than I have seen some factory tubes listed for.