What i find interesting is guys like to always say it is shot placement to help justify their light arrow usage. We as archers all know kids can shoot thru the midsection of North American game with light arrows and low poundage using a quality fixed blade head. But what most of us really are wanting is a set up that will penentrate heavy bone hits when the marginal shot is made. Anyone that bow hunts will eventually have that marginal hit that results in bone contact and we want to be able to overcome the marginal hit. So what gives us the best chance of doing that? It will come down to two very important things. Weight of the arrow/broadhead setup. And the type broadhead used. I don't want to get into the open on impact debate in this thread so forget about them for now. A cut on contact head like the Silverflames will ALWAYS penetrate better than bullet point heads. And two baldes are better than three or four. And certain bevel cut two blade heads are better than others. My point being her in North America we don't have to get that carried away to be highly successful for what we hunt. The debate over total weight can go on forever but the guys that hunt big African game and the guys that have done real life testing all have drawn the same conclusion and that is heavier is better when busting thru bone. And there are some pluses and minuses for light vs heavy arrows but for penetration heavy is better without a doubt. I always try to get new archery hunters to shoot around 450 grain arrows. I can honestly say i have never heard anyone say they wish they would have been shooting a lighter arrow when a marginal hit was made.