I've had a S&W 340 M&P for several months. As anybody who has touched off a .357 load in the pistol knows --- it really 'stings'!!!
I'm not one to shy away from recoil but this little 12 ounce pistol is a real 'hard kicker!! Even with +P or light .38 Spec. loads, some of my good shooting buddies 'decline' to shoot it.
Because it is so light and 'dainty', I find it to be a terrific CCW pistol. In a DeSantis 'Speed Scabbard' on a stiff belt, one can carry it hardly knowing it's there. It also slips into the pocket of a pair of shorts without 'sagging'. The real problem for me was that the grip was too small for my hand, which contributes to a bruising session at the range and makes you not wanting to press the trigger very often!!
Problem solved today. I purchased a Hogue, Round Butt Rubber Monogrip that's larger and really 'fills' my hand. The gun still 'roars and barks' with defensive .357 loads but is pretty much 'tamed' from it's wicked, hurtful, former personality!
Next --- send the cylinder off to TK Custom to have it modified to accept Moon Clips.
I love my 1911s but in the hot summer around here, a light wheel gun is much easier to comfortably carry and conceal.