...Honestly i dont now why you would have to worry about it too much...also one thing i found out is that with little poundage bow it is better to shot heavy arrows cuase they will penetrate deeper, just my .10
Right on the money PSEsilverhawk55, all things being equal, heavier arrows shot from the same bow will indeed penetrate deeper. The reason is that bows transfer energy from the limbs to heavier arrows more efficiently than they do to lighter arrows, therefore there is more KE/momentum in the arrow in flight and therefore carry a greater potential to apply the FORCE necessary to push the arrow into/through the deer. I also agree totally that unless you are shooting a bow with "little poundage" it just isn't anything to worry about. Just keep your bow tuned, shoot a sharp broadhead and most important PRACTICE! I think captain backstrap summed it up pretty well!