I'm sure thatI annoy people with my posts.My comment about the chart was not in jest. On an archerywebpageI found the guy goes into detail about momentum yet provides nothing to prove that there is a certain amount of momentum required for certain game. It's now peaked my curiosity and I think it would be great for someone with a great deal of knowledge to discuss.

KE was all anyone ever talked about because that's all that mattered with bows and a minimum was established by some "experts".

My concern is that people over analyze something like this and it gets a life of it's own with no known basis. I think it's great that you've brought up momentum as a factor. I'm only 36. However, it seems as if archery like every sport it seems, has been overtaken by people trying to find the easy way out of not having to practice. And I'm concerned that someone that has not thought things thru grabs a hold of your post and runs nuts with it without really thinking it through. Most momentum equations you read tell you to ignore outside influences and pretend like you are in a vacuum. During my college days many professors would say that too for my electrical engineering classes. However, once you get into the real world you find it doesn't work that way.

The 5% of penetration you gain in momentum may be reduced due to wind drag on a larger shaft and friction of the arrow during entry. These things need to be taken into consideration before someone states that a heavy arrow is the only way to go because of momentum.