7MM mag,,,you're going to have an exit wound,,well,,with any thing I've used,,on a deer that is,,,don't know about hollow points and them ballistic tips,,but I bet even with them in a deers side. No trouble with bullit exiting with the 165 grain federal premium boattail either,,,its just it is about the same size as entrance hole,,,guess I'm just complaining about that round,,,seems like I used to use 175 grain [nonpremium stuff],and it made a pretty good sized exit hole,,,started using these 165 grain boattails,,for some reason,,maybe I just wanted to spend more money,,don't remember,,,maybe 4-5 years ago,,,I only shoot maybe a box every 3-4 years,,so,,I'm just getting around to complaining,,I'm slow,,,but this year after shooting a 7 point behind the ears and exit hole same size as enterance hole in skull,,,decided to get some other shells,,,saw this x-bullit,in federal premium,,,guess again I wanted to spend more money,,and here I am,,never even shot one yet,,but it sounds like it might be the ticket,,,,don't shoot much,so price ain't an object here,,,we'll see,,,,yeah,know the meat blowed out don't mean every thing,,,,,but if exit hole ain't bigger than where bullit goes in,,than that bullit ain't expanding,,,this don't apply to your normal hollow point,,,thats what I 'm talking about,,,don't eat the ribs,,,,like to see one I could stick my fist in,,well,,,,but,,,,a jfk exit hole,,thats it,,,,,,,beaver,,,like I said,if I lived close enough,,we could help one another in this,,kill beaver,and do exit hole comparisions,,,,,,thingy