I am looking to buy some of these, I'd use them primarily for hunting and practice in the backyard. I shoot 100 grain points out of a 71lb Z28. The arrows would be cut to 28 5/8" for my 29" DL. The only problem I see is the weight. If I am doing my math right, they would finish out about 330 grains. Isn't this going to be too light for my set up and void my warranty? Can someone with TAP help? What do you guys think?