Well, I am pulling the trigger on some new arrows. I am still very new at this recurve thing, so need a little advice. Right now, I am shooting a Browning Wasp. It is 48lbs at 28" and I have no clue if the shelf is cut to center or past or anything. I now what arrow, and how I am going to build it, I just am not sure what spine to get. I am going to get Beman ICS Bowhunter shafts. I am going to put 275 grains out front counting insert, and piont. Please help me determine if I need 400 or 500 spined shafts. I tried the Stu's Spince Calculator, but can't make heads or tails outa how to use that thing!!