For you guys out there with OT2 . . . . a buddy of mine shoots arrows about 30 grains lighter than mine. My Easton Axis arrows have got to be about 10 fps slower than his Gold Tips. If we are both sighted in at 20 yards, and shooting the same exact bow - just what sort of trajectory advantage does 270 fps have over 260 fps - out to 70 yards? Thanks.