I'm using standard nocks that come with gold tips, I would assume there standard lock nocks, also according to the gold tip website the arrows should be 8.2 grains/inch so that would put the arrow weight minus everything else at 229.6 grains so I think your right I will probably be weak I'm going to stop and get some 125 grain field points after work today and shoot those. How do I figure out the string weight? Thanks for your help.