So I recently bought Easton's FMJ (340) arrows.  I cut them, glued the inserts and put on some blazer vanes.  With my 100 grain montecs, the FOC is 7.9%.  My other arrow was at 9% or so, and they flew pretty good (haven't killed an animal yet, so I don't know how the penetration is).  I have no wraps, or any other funky stuff on the rear end of the FMJ's.  I shoot a PSE bow madness 3G at 65lbs.  So my question is: should I up the broadhead weight to 125 grains?  The crappy thing with that is I already have a boat load of 100 grain target tips and broadheads.  I haven't paper tuned my bow with the new arrows yet, and I'm wondering if I need to do that?