Quick Tip: 36yd Zero for the AR 15

Published on June 23, 2025
Duration: 14:20

This guide details the technique for establishing a 36-yard zero on an AR-15, as demonstrated by experts from Brownells. This zero is favored for its ability to keep bullet impacts tightly stacked from 25 to 250 yards, making it ideal for competition and unknown distance shooting. The process involves bore sighting, firing initial groups, calculating necessary scope adjustments using MOA conversions, and refining the zero for optimal accuracy.

Quick Summary

The 36-yard zero for an AR-15 offers superior trajectory management, keeping bullet impacts tightly stacked from 25 to 250 yards. This technique simplifies holdovers for intermediate distances, making it ideal for competition and unknown range shooting. Accurate zeroing involves bore sighting, firing groups, and calculating scope adjustments using MOA conversions specific to the 36-yard distance.

Chapters

  1. 00:00Introduction to the 36-Yard Zero
  2. 01:08Trajectory Comparison
  3. 03:15Ammunition and Barrel Variables
  4. 04:31Setup and Bore Sighting
  5. 05:51Initial Zeroing Group
  6. 08:07MOA Calculations at 36 Yards
  7. 09:34Refining the Zero
  8. 11:16Final Adjustments and Conclusion

Frequently Asked Questions

What is the advantage of a 36-yard zero for an AR-15?

A 36-yard zero for an AR-15 is advantageous because it keeps bullet impacts tightly stacked from 25 to 250 yards. This simplifies holdovers for intermediate distances, making it ideal for competition and shooting at unknown ranges.

How do you calculate scope adjustments for a 36-yard zero?

To calculate scope adjustments, measure the offset between your bullet group's impact point and your point of aim at 36 yards. Then, convert this measurement to MOA, knowing that 1 MOA at 36 yards is approximately 0.3769 inches, and apply the corresponding clicks to your scope.

What tools are needed for zeroing an AR-15 at 36 yards?

Essential tools include the AR-15 rifle with a magnified optic, a stable shooting platform like a tripod for bore sighting, and a tape measure for precise group measurement. A spotting scope and ballistics app can also aid the process.

Does ammunition type affect the 36-yard zero?

Yes, ammunition type significantly affects the 36-yard zero. Different loads, like M855 62gr versus Hornady 75gr, have distinct ballistic trajectories. You must account for your specific ammunition when zeroing and calculating adjustments.

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