dude. answers.com is awesome...I leanred about the 10mm auto (which sounds really cool, other than being expensive and hard to find) .40s&w (has the same trajectory as the 9mm but with way more power) and .45 acp. (awesome stopping power!)
this stuff is good to know.
I want a glock 20 now too!
<img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />