Depends on your arrow. If your crossbow arrow has a aluminum insert up front, I like a heavier head to increase the front of center. 150 grains or so. If you arrow has the brass insert up front, 100 grains is ideal.
Many broadhead makers are producing heavier heads for non brass insert arrows.
I support all hunters, regardless of weapon or technique!
ive been using the 100 grain 3 blade muzzy with the 1-3/16 cutting diameter and my bolts have aluminum inserts and they fly fine..but im shooting a excaliber crossbow....put one of your heads on and shoot it a few times and see how they group....