http://www.internetarmory.com/handgunammo.htm One person's views, supposedly backed up with empirical data. For example, he rates the 40 S&W, 45 ACP, and 357 Mag as superior to the 10mm Auto or 44 Mag, something about them being so powerful they'll blow right through you. I've read the same general opinion regarding stopping power of the 7.62 NATO in interviews with SFO snipers who feel that a round 300+ meters downrange has greater knockdown than one fired at less than 100 yards as it blows right through the target. Interesting read. Just passing it along. Guess I'm good to go with the 45 ACP 230 grn HydraShocks in my G30 in the nightstand!