RE: New Powerbelt find
I've heard some guys swear by the 195 grainers, but IMO they're just too light for deer-sized game. Don't get me wrong, I'm sure they've killed plenty of deer, but it seems like in order to get adequate penetration you're going to need to use such a light load of powder that you're giving up a lot of speed and energy. In the .45 the 225 or 275 grainers seem to be a much more reasonable choice for deer, even though they can have penetration issues with high powder charges.
I just watched this hunting video where a guy shot a buck with the .45 225 grain Powerbelt and 150 grains of Pyrodex. Deer was about 50 yards away, and dropped like it had been struck by lightning. I found it interesting, though, that they never showed the hunter posing with the deer post-mortem. Probably due to the football sized hole in the deer's neck or chest where the bullet exploded.