Hello guys, I am shooting a switchback and was wondering how low do you go as far as grains per inch. I know mathews warranties theres at 5 gr per lb. But do you think it is best to go over that to be better on you bow, or does it not matter? reason i ask if i bought some GT ultralites and got them cut at a liiiitttle over 28 inchs. I figured dressed out they would be about 370 with 100 grain broadhead, but they were 348 with broadhead... lol so i was wondering how much weight i should add to the arrows to be on the safe side?