For starters I'll mention that Mechanicals are illegal in some states such as Idaho!

I personally wouldn't go that route, there are so many other quality broadheads on the market today to choose from, no sense in gamblin whether yours is the one that may not penetrate or open properly, it does happen!!

We (our hunting camp) have used both thunderheads and muzzys for years and have taken our share of elk with them. But the more I hunt & mess with cut-on-contact heads the more I'm convinced they out-perform fixed blade heads. I used the Magnus Stinger 4-blade 125 last year and can say they without a doubt did better than a muzzy would.

Any decent head these days can do the job under the right situation just as a 40lb bow can harvest elk, but for those marginal or less than desired hits or distances you're better off with 55+lbs and stout heads as Stingers, Snuffers, or G5 montecs or similar heads, it's taken me a few years to apprecieate this but I'm sold on their performance.

For what it's worth, cut-on-contact gets my vote!! <grin> ElkNut1