60lb Carbon Icon Bowtech
125gn QAD Exodus and field points
Whisker biscut rest
2" blazer vanes with helical
When I do my part (50-60% of the time), BHs are always the low arrow in the group out to 70 yds (4-6" groups). The other 40-50% of the time broadheads inevitably are 2-4 inches low and 2-4 left of FP group at 70 yds. Left and low always. Only 1 in 20 groups is the broadhead (shot first) in the top half of the 5 FPs.
I think left is grip torque which the broadheads may pickup more, and the low is wind drag, at least that's my theory. If I add 1yd to my pin between 40-50 and 2yds 50-70, it seems to help, so that's what I do in field.
I do have my broadheads numbered, as some seem to group with FP's better. Best ones (1-4) are dedicated for hunting. They group with FPs probably 75% of the time.
Rotating the nocks on the broadheads really helped some arrows consistently group better w/FPs.
After 1000's of shots, 100's of rest/nock adjustments and endless hours...I'M DONE!