If you have a 500 grain flat nosed bullet cast at 20-1 shooting well out of your rifle, DON'T CHANGE ANYTHING. That will shoot through and through any elk that walks at any distance you can hit him. Just hit him on the shoulder in front of the diaphragm and you have a dead elk on your hands. If you have any questions, pm me your phone number and I will call you and get you lined out.