if you have a accurate scale to measure your arrow weight, if not get the GPI of your arrows and that will give you a good estimate, then calculate your KE online, goldtip's website has a calculator that shows your KE in a chart w/ the recomended amounts for game type. Im sure 250 is plenty... if you feel like turning it up more maybe add just a few pounds every couple weeks and you wont notice the change all that much.