There are a lot of VERY smart people here.......especially those with my all-time favorite gun, the three-inch M65 Smith! I carry the Speer 135 in it, just bought a buttload of it and distributed it to my troops to carry, we are restricted to 38 Spl on duty, and all carry M-10's with 4 inch barrels. I'll shoot a few 357's out of my M-65 now and then, just to make sure I can do it, but since I carry a 38 on duty, I want to be used to the load. If figure it it works that well out of a 2", it should do fine out of a 3-4 inch barrel.
Bladeswitcher, you've got one of the finest carry guns there is, I put a Pachmayr Compac on mine and use it as my latest teaching gun. Woman love the small grip, and even guys with bigger hands shoot it well. I personally don't think there's a better all-around carry gun extant!
Papajohn