I think that anything over 12 grains per pound of bow weight is a bit much for hunting whitetails. I am not saying it will not work because it's too heavy to shoot well but rather that the heavier the arrow is the slower it is. Now I know and I stress speed doesn't kill but a heavy arrow also doesn't do any good if the deer is gone by the time the arrow gets there. I try to keep my arrows between 10 and 11 grains per pound because it helps keep my bows quiet, the arrows are plenty heavy, and I don't lose enough arrow speed from an approximately 600 grain arrow from my 55 and 60 pound hybrids to worry over. I see guys on here post set ups shooting a 700 grain arrow for a 50 lb or lighter bow and I am not knocking them, I just know that for where I hunt and how I hunt that set up probably wouldn't work to well. I want a pretty heavy arrow but not so heavy that it gives the deer more time to get out of the way.