I have gone on several long distance hiking trips, Across all sorts of terrains. I have always carred my Glock 21 45acp, its always worked great, and luckly I have never had to use those 14 rounds of knockdown power. I have been looking at H&k Usp 45acp,and some other large caliber pistols, and i was woundering if any one had any experince with one in those type of conditions, or had a better option,