I shoot the FMJ 340's with 2" QS vanes. I love them. I am grained out to 450 grains. I'm shooting those at 297 fps.....88# of KE. They are really great arrows. Washingtonhunter really summed it up. I find that my set up (28" arrow, 100 grain tip) that the FOC must be pretty darn spot on. My Montec G5's fly dead on with my field tips out to 50 yards. I imagine that they would be on to 70 yards, but I have only 4 pins.