I decided to perform my own informal ballistic test with my newly acquired Colt Cobra (2" barrel). Fired 2 rounds of Speer GD SB 135gr +p and 2 rounds of Corbon DPX 110gr +p into a pack of newspapers. Both rounds performed brilliantly. All rounds mushroomed retaining full weight. Corbon loads measured ~0.6 inch and Speer ~0.55 inch. Got about an inch more penetration out of the Speers. I would feel comfortable carry either. Interestingly, fired both loads out of a 6 inch S&W and got similar results. Just thought I share.