I strive for accuracy. That's why I've been through several medium frame 4" .357s until I found one, a Taurus 66, that shoots 1" groups at 25 yards with its fav .38s or .357s. It's better than my M19 was, my Security Six by a long shot, and my Rossi 971. The others are all gone, the Taurus is in my collection. You don't like 'em? Cool. You won't want mine, then.
I have others, a pair of Blackhawks, 4 5/8" .45 Colt and a 6.5" .357 that will shoot that well. I even have a .45 ACP Ruger P90 that will shoot under 2". Who'd a thunk THAT? My best 1911 didn't get close to that and it's 100 percent reliable with everything I feed it. Amazing.
My search for accurate firearms has taken a while, but 4 moa is not impossible to achieve with a revolver, let alone a single shot pistol. It's a little harder to get that sort of accuracy from an auto, but you can get close. You can get better with stuff like the Smith and Wesson models 41 and 52, but that's sort of cheating, target guns.
A good carry should groups into 4" off the bench at 25 yards. I've read it and I do believe it. If it's more accurate than that, GREAT! LOL But, my snubbies have always bettered that and my Kel Tec P11 slightly betters that. You can get that sort of accuracy in a pocket gun, believe it or not. Your ability to SHOOT it might not be that good, I'm just speaking of the hardware.