Well, I shot a doe with a 4 blade 100 gr Muzzy last season, and it was a pass through. Not much more penetration to be had there. I am quite certain the Stinger I put on my arrows this year will do the same, but I must say I like the flight characteristics of the Stinger over the Muzzy. I HATE to vote down a Muzzy, but those Stingers are just awesome.