Broadhead tuning: matching field-point flight
Broadhead tuning gets your hunting broadhead to hit the same point of impact as a field point of the same weight at 40 yards. A tuned rig will land field points and fixed-blade broadheads in the same 3 in circle. An untuned rig will print broadheads 4 to 8 in off, no matter how well you shoot.
Five steps to matched impact
- Confirm the rig paper-tunes bullet holes with field points and passes walk-back to 60 yards.
- Spin-test every broadhead on a Ram spinner. Any wobble over 1/32 in gets rejected. Cheap broadheads fail this at a 20 percent rate.
- Shoot one 100 gr field point and one 100 gr fixed broadhead into a fresh Rinehart at 20 yards. Note the offset.
- If broadhead prints right of field point (RH shooter), move rest 1/64 in left, retest. Cam lean, not centre-shot, moves broadhead impact more than field-point impact.
- When broadhead and field point land inside 1 in of each other at 40 yards, verify the group at 50 and 60 yards. A tuned rig holds impact to within 3 in at 60 yd.
Micro-adjustments that matter
A yoke-tuned cam (Hoyt HBX) allows top-cam lean adjustment. 1/8 turn of the yoke moves broadhead impact 1 in at 40 yd. A shim-tuned cam (Mathews Crosscentric) uses cam shims to move impact 1 in per shim swap. Both are more effective than rest moves for pure broadhead tuning.
Common errors
Shooting mechanicals to tune (they mask fixed-blade wobble). Broadheads with dinged tips (retest after each shot into a Rinehart). Fatigue: after 20 shots, form breaks down and false patterns appear. Take a break every 6 arrows.
What bowhunters are saying
I broadhead tune with a 125 gr Iron Will three-blade. If it will not stack with a field point at 40 yd, I know my cam lean is off. Field point and Iron Will same hole is my go-hunt benchmark.
ArcheryTalk, Broadhead Tuning subforum, 2025