I've killed several elk with my 2 blade Zwickau deltas from recurves in the 55-60# range. A couple years ago I switched to Simmons interceptors. I had no real reason to switch, except I always thought the simmons heads looked cool and a friend showed me how to sharpen them. The interceptors penetrate really well from a 52# recurve and cut a nasty hole. Just make sure the heads are spooky sharp and don't hit the shoulder blade! I have a few compound buddies that have had great luck with woods mans and thunderheards, I just like big 2 blades. Good luck