ORIGINAL: jdbowhunter

For what it is worth, your main concerns should be accuracy and kinetic energy. If the 360 grain arrow is spined properly and is very accurate, you will have enough kinetic energy to kill anything you hunt. I have tested many arrows with a good chronograph to check the difference in kinetic energy (light vs heavy). If you do not change the poundage on your bow the kinetic energy will be around 1 additional foot pound of kinetic energy with the heavier arrow. It really boils down to: go heavier and lose speed, go lighter and gain speed. However, on long shots the heavier arrows will maintain energy more efficiently than a light set up. I have read that we as bowhunters should have at least 40 foot pounds for deer and 50 foot pounds for elk. I, personally recommend 50 foot pounds for deer and 60 foot pounds for elk. With you poundage and draw length, you should have no problems getting close to 70 foot pounds of kinetic energy. The formula is speed x speed x weight of arrow in grains divided by 450,240 equals foot pounds of kinetic energy. Good hunting and don't get too caught up in the technical bs.