I did not buy a 45 because I wanted a "big" hand gun. For years I had a fascination with 1911 45 auto,and shot several different brands during that time. A couple years ago I got the chance to buy one. It's a Colt knockoff, but it shoots good and a hell of lot of fun to shoot.
Sometime back I bought a supply of hollow points from Georgia Arms.I shot a metal gallon can full of water.45 going in and 90plus coming out. Big nasty hole coming out.
Your hollow points are going to do a fine job... Most all hollow points, provided they are properly manufactured, will just about double in diameter when fired into soft tissue or liquid. That is just what they are supposed to do... That expansion helps create a bigger permanent wound channel.
For kicks and grins, drop a few Mentos candies into a 2/3 full 2 liter bottle of diet Coke sometime, and then quickly cap it up. Then step back and put one of those .45's through it - be sure to be wearing a raincoat or a pancho! WooHoo!
Raven6