Some call the .357 Sig a bastard caliber that fits in nowhere useful. I beg to differ. I would argue that the .357 Sig is one of the very best calibers out there for self-defense purposes, superceding both the 9mm and the .40 S&W. It will do anything either of these calibers will, and do it more efficiently and more reliably. The bottleneck design of the round makes feeding issues almost a thing of the past. A 9mm bullet pushed to 1500 fps at the muzzle is devastating on human targets, and far more effective than either the 9mm or the .40. I have shot more than 1500 rounds of .357 Sig through my Glock 33 without a single misfire or failure to feed. I suspect this caliber will continue to grow in popularity as more shooters discover its virtues. Input?