I've killed alot of deer with the .30-30. Used 150 and 170 core-lokts, 170 Silvertips, 170 Fedral power shok's and 170 power points. All kill deer just about as dead as they're gonna get. The 170's do seem to penetrate a bit better and have always exited on broadside shots for me, even when one or both shoulders are hit. Lung shot deer typically run 40-60 yards and fall over dead with any of them.