Like I said in the initial post, I'm new to this. I went home and measuredan arrow, Easton Epic 400. It is 8.2 gpi and measured 28.5 inches with an additional 1.25 inch for the nock(29.25 total). I thought the 400 stood for the weight. Sorry. Doing the math(correct me if wrong) the total weight is 333.70 with the field tip. This doesn't include the weight for the fletching,insert, or nock.