Zeroing · Free PDF
Red-Dot Zeroing Target
Set a 100-yard AR-15 zero without a 100-yard range. Aim at the upper black bullseye and adjust your optic until the group lands on the lower gray bullseye. That ~1.4-inch offset is where a 100-yard-zeroed 5.56 load (M193, 16-inch barrel) prints at 25 yards, so matching it gives you a 100-yard zero you can confirm up close. Calibrated for 1/2-MOA red-dot clicks.
Print at 100% scale on US Letter (8.5 × 11 in).
- Shoot at
- 25 yd
- Click value
- 1/2 MOA (0.131 in @ 25 yd)
- Aim/impact offset
- ~1.4 in low
- Result
- 100 yd zero
How to shoot the Red-Dot Zeroing Target
- 1Print at 100%, confirm the scale, and set up at 25 yards.
- 2Aim at the black (upper) bullseye and fire a group.
- 3Adjust your optic until impacts sit on the gray (lower) bullseye while you keep aiming at the black one.
- 4You now have a 100-yard zero — confirm at 100 yards when you can.
Measure your group from a photo
This target has RoundKeep corner markers. Print it, shoot it, then photograph it with RoundKeep Zero. The app reads the scale from the markers and gives you your group size in inches, and the photo never leaves your phone.
