Thanks for the info Straightarrow , Im going to put it to use . My curent setup is shooting around 270 with a 375 grain arrow . I killed a couple deer last year under 20 yards , and had a doe duck an arrow at 35 , I usealy dont shoot that far at an animal but everything was perfect and I made a perfect shot , with my followthru I saw the deer drop what looked to be 2 feet before the arrow got to her , she was calm with her head down eating accorns . Im pretty sure it was arrow noise as my bows quiet , but I had new feathers on the arrows and new ones do make a buzzing noise . Ive been trying vanes , but I hate the things , so a slower heavyer arrow may make me happy . The arrows Ive come up with are 28 inch 2314's with feathers and a 160 head for arround 550 grains , should make a differace in noise allaround .