I'm shooting GoldTip XT Hunter 5575's, and their spine is .400. The chart on the GoldTip website says that for my set-up, 70#+100 grain+28.5" arrow, the recommended spine is .340.
Two questions. First, is the .06 spine difference significant? Second, and this one will sound stupid, but I'll ask it anyway, is .340 stronger or weaker than .400? Am I over-spined, underspined, or am I okay?
I'm about to upgrade to a dozen Pro Hunters and I want to get this right.