When I am out meat hunting I will avoid any shoulder shots for the very reason that it messes up a bunch of meat no matter if I am shooting 45/70, 44 mag or 3006. I will try for a broadside double lung shot because I too don't eat the ribs on most of the deer down here. If it is a big hog I will usually opt for a shot just below the ear for a bang flop. Then it stays away from the bigger ribs of a heavy porker.