well guss u r getting 44 ft.lb not bad for a long bow,

big eon at 230 fps, and 501 arrow u are in the 59 ft lb. and for u to get 300 fps, u may need to get all the stuff off that string and shoot a 350 grain arrow, now at 350grains at 280 u would gain a little energy, only 2-4 ft lbs, that is not alot! but u would be shooting a flatter arrow and a smaller diameter, and that will make for a little better penitration!
i always think of huntnmuleys in this situation, he who has a small peter gets good penitration! now if he could only find a place to penatrate!lol ...brad