Tested 3 loads
I am not sure what length barrel your S&W has, but I tested these out of a CZ75 with 4.7" barrel. They were shot into soaked newspaper bundles with a G.I. field jacket folded in half and placed in front of the wetpack.
Win. USA 115gr HP: .57 and .65 expansion, penetration was approx 12". Expansion average: .61
Win. 147gr Silvertip: .61, .65, .50, and .59 expansion, penetration was 14". Expansion average: .58
SpeerGD 124gr +p: .53, .52, .56, .63 expansion with the average being .56, penetration was approx 14", similar to the Silvertip load.
All in all I was impressed with all rounds fired, especially the Win 115 HP's which I pick up at Sports Authority for 8.99 a box of 50. If your barrel is shorter than 4" I would use something in the 115gr to 124gr loads. Another good load to check out is the Remington 115gr +p load, when I tested these all rounds expanded over .60 and penetrated approx 12". Most important, make sure it is reliable.