I'm still debating on 125 grain and 100 grain for elk. If I decide to go with 100 grain, how much of a difference will the 1 1/16" and the 1 1/4" cutting diameter make?

The two broadheads I'm considering are the Muzzy MX-3's and the Cabela's Copperhead. I'm leaning towards the MX-3's.

Thanks Bryan