I just started playing with the FACT system in some of my hunting arrows. Playing with flight characteristics this summer for 15-20% FOC - I can say so far that I've definitely noticed a "problem" with shooting that heavy of tip weight. I started shooting clear through my targets and tearing up my fletching!

But I suppose that's not really related to the gold tip arrows, since any arrow with a .246" ID can utilize an insert compatible with FACT weights.