If mechanically sound, they are excellent revolvers. I have two of the .357 versions and an Official Police which is the same gun with fixed sights. Shoot +P as much as you like. As was stated, when this gun was made, what we call +P today, was just standard ammo. I have put quite a bit of +P through my OP. They also had something called .38/44 ammo. This is basically a .38 loaded to .357 velocity. Colt said this was fine for thier guns.