I have six of the GameTracker First Cut Exp's, 100 grain. I shoot 430 grain arrow at 275 fps for 72 KE. I bought them last year but haven't shot any game with them. Just wondering, from the few post I have read about them should I just go with the Rockie snypers that are so highly touted or save the $25.00. I don't know of anyone who has killed a deer with the gametrackers so I don't have a reference in on game performance. Will the gametrackers EXP's suffice?