While one of my carry guns is a 637 S&W which I don't shoot often, I do carry it with +P ammunition. My choice is Speer 135 grain Gold Dot +P "short barrel" which is optimized for barrels as short as 1.9". It is a bit hard to find but occasionally you can find it in 50 round boxes which is made for law enforcement. Usually only 20 rd boxes can be found. It is superbly accurate in my S&W. When I use my 66 2.5" I use a .357 magnum 135 grain +P version of the same ammo in it. I don't find either to be a problem in recoil in either pistol.