I don't buy that for one sec. What it is, is shot placement and the ability to make that shot. Without a doubt distruction has a lot to do with it but, there can be to much and to little for the shot taken. Give me a 22 short and I can feed my family deer all year. Give me a 338 mag and probably can't do the same with rabbits. Difference iss the ability of the shooter to place the shot. This of course would change depending on the shooter's. I had a 338 mag and had to shoot a lot, a whole lot, just to be fairly good. As a result I didn't hunt with it much! Had a 7x57 at the same time and hunted with it a lot! Every bullet has the ability to kill pretty much anything if it is properly placed. And properly placed depends on weather or not the user can actually shoot the rifle! I think more than we know bullet's get a bad rap for bad shooting.