Your GTG all I use is 100 grain broadheads for all my biggame hunting now(deer, moose, elk and bears) never had a problem with doing so. In the past I use to switch between 125 and 100 but that caused nothing but grief, no I just stick with a fixed or Cut on Impact quality head. I know a number of guys running the same type of set up that have taken both elk and moose. I switched to 100 gr cut on impact and just love the results they produce. I tried the Magnus stingers and used the steelforce premiums last year both have provide excellent flight, groups and pass throughs..if you want to try something new