ORIGINAL: Muliefever
Cool thanks for the info. I will be shooting 68# So I think I should be fine.. According to the FOC calculator for the best results I should shoot a 85 gr, broadhead.. with a 30" arrow.. But that makes me nervous.. Is that broadhead going to be acceptable for elk? I have always used 100 gr.. And they work well. So I am actually kind of in a stump! I am not sure what to do!
One of the things that gold tip calculator showed me was that a head is not as it appears. The insert makes it 15 grns heaver so a 85 head is actually 100. Did you see this other calculator?
http://www.goldtip.com/calculators/kinetic.asp
There's been a good discussion in the technical forum about this subject which didn't answer it well but if this calculator is correct you should be fine like W A commented. He brought up a good point. One shaft may shoot better than another. If there was a machine that could show a 3d picture of an arrow in it's flight path we would have it made.