That isn't all that a sidearm is about. 9mm is okay, but if I were going to carry a .35 caliber, it would be .357 Sig. Double Tap has a new load in .357 Sig that reaches 1,550 fps with a 4" barrel! That would be about the equivalent of 9mm +p+p+p+p+. Wanna kill these ads? We can help!