RE: Can you help me, help educate a fellow bowhunter??
Twang, Eders bow states (January Issue)
" For deer and bear hunting, mechanical broadheads should be restricted to only those bowhunters who generate at least 50-55 foot-pounds of kinetic energy. This is comparable to a 450 grain arrow being shot at 245 fps - roughly the output of a 55 pound moderate cam bow".
While mechs can be good heads for the appropriate set up they waste KE while opening. Your friend has less to start with. 40 lbs is ok for fixed. Good luck!