man now that is some number crunching and interesting information. what I was trying to do was use a heavier arrow and still be able to use one pin out to 30 yards. I did increase my arrow weight but I compromised to b/t the 314 and 398 grains I originally started with and settled on the 349 grain arrow by adding 4 inch vanes and the crest. Perhaps, before next year I could increase my draw wt with practice which would enable me to increase my ke. I definetely cannot increase my draw length unless I get put in one of those archaic stretch torture machines