Times have changed and ballistics . I agree on some things here but I can personally tell you the ammo of today is not like the old. I have done many tests myself, some on ballistic vests and can tell you two sizes you don't want to get shot with, a 45 or a 22 . I have shot 20 lb raccoons with CCi Stigers and they left exit holes just about quarter size . Knocked them off my garbage can with a full flip !
Here is a good video to watch .