Hi, I'm new to archery and am reading alot about arrow weight. I am shooting a G5 Quest Heat at 55# and a 28" draw. I am shooting GT XT Hunters 5575 that measure 28 1/4" from nock point to the end of the carbon before the start of the insert. I am using a 100 grain field point. The chart says that the arrow weight is 8.2grams per inch. What is the proper measuring point to determine total weight? Is the nock and insert included or do I need to add them to the total arrow weight? I'm just trying to determine what my arrow weight is this way or should I just take one to my archery shop and have them put the whole arrow set-up on a scale? Thanks for your help