Power -there is no need to shoot a deer through the shoulders.I use only lung shots and the deer I kill drop quicker than those shot by most other people because of the bullets I use and the velocities they are travelling.I would not worry about the 7mm ballistic tips blowing up on deer at close range as I have taken several 300lb plus deer with this bullet with a muzzle velocity of 3500 fps.If they do not blow up on deer this large at this velocity it is very unlikely they will fail on any deer at 7mm mag velocities.