I have used mechs on deer and while they worked fine, I have switched back to 100gr fixed heads for all my bowhunting needs. I find it easier to stick with one head for the variety of game I may be hunting vs always switching and relearning the tendancies. I will admit I never tried anything but a fixed head for bear, moose or elk, so I can not comment from experience on the mech may provide. Maybe some will chime in with their experiences with mechs on elk or larger game.

I have used Muzzy with good results on Elk, Moose, Deer and Black Bear. I have now switched to cut on impact and love the results for doing so, they fly right with my field points, sharper, easy to tune and all produced clean pass thru's. I have blown through moose, elk, black bear and deer with the Magnus Stingers with bleeder blades(100gr) and Steelforce Premium 100gr (2 blade).

My setup is a Martin Cougar Mag at 72lbs with 300 CXE (28.5") and currently run the SF Premium 100gr heads.

The most important thing is proper tuning of your bow, without this you will have problems on the larger animals. I would personally suggest testing some of the fixed or cut on impact heads for the larger structure of an elk, if for no other reason then one less thing to consider and knowing your bow is truly tuned!!!

BTW, where abouts you guys planning on hunting (WMZ)???