Your post is not at all surprising nchawkeye! All it takes is a little common sense that if a bullet is designed to expand greatly at a certain speed within a certain length when it hits tissue it will do a lot more damage than one that is not designed to expand much, if at all, within that same length when it passes on through. Thus, it's no surprise that a bigger caliber premium bullet that isn't designed to expand until it has penetrated quite a ways is going to give exactly the results you mentioned in your post and not do as much internal damage. The bullet used is a huge part of what we're talking about and your last sentence is one that people in the know will generally tell newbies when hunting smaller animals like an antelope or deer as compared to what to use when hunting elk, moose, etc. where a premium bullet is the way to go most of the time.