Remember, when you drive a sledgehammer into the side of them they run further and die in a slough or river. Penetration and pass thru are the key. All the moose I have shot with fast copper bullets ran farther 40-60yrds than the the muzzle loader kills 3-6 yards. I shoot 130 GMX bullets in my 270 win, partition bullets in 30cal and 338 win.