Ok Stealth I see what you are saying and the formula says the same thing! Since Velocity is one of the factors in figuring out KE (Weitght of the shaft the other) If there is a change to one KE changes.
If you shoot an arrow out of a bow and srart heavy and then progressively get lighter the KE will continue to go up.
If on the other hand as the arrow gets lighter we turn the poundage of the bow lower in order to keep KE the same... the penetration will begin to decrease at distance.
Again it is a relationship.
Africa,
I read an artlcle about a bowhunter who hunted Elephant to prove to the Natural Resources folk in a country that the bow was a ligitament tool for hunting Dangerous Game.
I'll pull the article and quote his set-up but I believe he was shooting an 75-80 pound bow with custom Aluminum shafts that weighed around or over 1000 grains. I forget what broadhead he was using but it was 150 grains or so.
Me, I want to hunt leopard with the bow but Lion (the PH with a big bore is required for all DG!) is a different matter to me!
Cape Buf, Rhino, Hippo, Brown Bear and Grizzly are just too dangerous for me to hunt with a bow. (nope... not enough testosterone for me <img src=icon_smile_big.gif border=0 align=middle>)
I have had to opportunity to go over twice and I will go back! The cost is about the same as a full 1x1 Elk hunt in AZ, MT or NM including travel and license and if you shop around this would INCLUDE trophy fees for up to 7 animals!
My first trip I stalked several Nyala, Blue Wildebeast and Impala. I took an Impala and had an arrow-eating tree <img src=icon_smile_sad.gif border=0 align=middle> on a beutiful Nyala bull.
I have elk hunted Montana and Colorado and had a 5x5 within 15 yards and several other bull within 100 but not the number of game nor the stalking as I had in Africa.
Greg
"Getting close to the game is the joy of Bowhunting for me, the harvest is a bonus."
Live 15 ft Python after eating a small Antelope!