Yep, I shoot a 543 grains at 21 % FOC. Hits like a javelin. We designed them for hogs, but if an occasional deer happens to cross my path, dead deer walking!

Think about it, if it works on trad. it will on compound. Forl years trad shooters have gone with heavy FOC and it's worked so the same thought behind this. I did have to go to 340 spine so I wouldn't be under spined. I usually shoot a 400 spine arrow, at 58#.