Im shooting 70# @ 29". I just went with a 300 spine gold tip pro hunter w/ 10.5% foc 450g
Im sure your hunting IA whitetails! If u want speed go with a lighter arrow! Last year i shot a 375g. Since im going elk hunting this year i wanted a little heavier arrow so bumped up too a 450g arrow that i can still use for whitetails! im gonna loose a little speed for whitetails (still at 300fps) but its gonna pack a punch!!! Go too gold tips site and u can just play around building a arrow! good luck