Just recently picked up a digital scale on line, a cheap (inexpensive) one but accurate one at that. I paid 19.00 for it and well worth it. I tested 110 130 150 gr. .270 bullets on it and it was dead on. I found out that a few NAP broadheads I had that were marked 100 gr. were 125 gr. oooh: Now I know what my arrows with broadheads or field points weigh now. The pic is Easton Full Metal Jacket with .125 Gr Shuttle T lock total weight is 456 gr. My other arrows are 450 even which i good. Now I know both are close to each other.