Is 36 Yard Zero The Best? [Different Optic Height Results]

36 yard zero laser range finder

Is the 36 yard zero the best combat zero for fighting rifles?

Yes. For all intents and purposes, the 36 yard zero is the optimal 5.56 battlefield zero where all hits land within the point of aim. Shooters can expect all rounds to hit within a BC zone size target without memorizing holdover.

Check out some results we have collected.

3 Reasons To Use A 36 Yard Zero

  • ~5" shot group for anything between 25 - 300 yard
  • Eliminate mental processing for holdover at unknown distances within 300 yards
  • Increased probable combat effective hit every time
36 yard poi 45 degrees leaning right

Shot group as tight as a 5" circle (size of a CD) for CQB & mid range distances. 

It's the ultimate hybrid zero between 25 - 100 yard where the highest trajectory over the point of aim is about 4" high at ~150 yards, and just about 2" low at 300 yards when the bullet starts to drop.

Check it out below:

Zero Comparison - 36 VS 25

36 yard zero vs 25 yard zero

The 25 yd zero is the most common go-to zero for most shooters, but as you can tell by comparing these two zeros, the 36 yd zero has a much tighter group for most engagement distances.

Meanwhile the 25 yd zero works well for 25, 300 and 400 yds, but it falls short for 150, 200, 250 and 450 yds where the shooter has to be cognizant of proper holdover compensation in order to get on target accurately.

Zero Comparison - 36 VS 50

36 yard zero vs 50 yard zero

The 50 yard zero actually felt similar to the 36 yard zero. It gives the shooter a even tighter shot group between 25 and 250 yards, but at 300 yards the bullet drops almost 5" down from the point of aim. Now the overall shot group size around 9", and the holdover is required at that point.

Zero Comparison - 36 VS 100

36 yard zero vs 100 yard zero

The 100 yard zero gives the shooter a even tighter shot group than the 50 yard zero between 100 and 200 yards, but the bullet begins to drop significantly at 250 and 300 yards with a total 12" shot group.

Test Results With 55gr Target Ammo (16" barrel)

X95 High Optic Height Over Bore - Test 1

The distance between the optic and barrel do affect the shot group. Check this out: 

X95 with EOTech on Unity Tactical FAST mount ~ 4" optic height over bore total

x95 with eotech
36 yard zero high height over bore result

Increased optic height + X95's height over bore do stretch the overall POI about 2.5 - 4" apart compared to standard 1/3rd co-witness optic height.

Standard 1/3rd Co Witness Optic Height - Test 2

AR15 with Vortex AMG 1/3rd co-witness optic height

ar15 vltor with vortex amg
36 yard zero 1 3 co witness height

Shot groups are packed much tighter with 1/3rd co-witness height than X95

Common FAQ

Who Introduced This Zero

The 36 yard zero idea was initially introduced to the community by Shawn Ryan (Vigilance Elite) Former SEAL.

Watch how he explains it:

Who Can Benefit From 36 Yard Zero?

People who can benefit from a 36 yard zero are:

  • Military
  • Competition shooters
  • CQB Home defense
  • Great for multi purpose rifles

Less thinking nor memorizing holdover is required.

How Do You Zero For 36 Yard In A 25 Yard Indoor Range?

Please download this calibrated 36 yard zero target for a 25 yard range.

Just download it here and print it out.

Note: You MUST scale image to 100% for accurate print results

How Does A 36 Yard Zero Perform For CQB Distances?

eotech 68 MOA ring reticle range estimation human size target
36 yard point blank holdover

For any CQB distance targets within point-blank distance up to 10 yards, the 36-yard zero assuming normal optic height over bore setup (1.5"), the shooter has to aim high over the desired point of impact to get a well placed shot.

This is where the bottom hash mark of a 68 MOA ring reticle from the EOTECH helps a lot by providing a holdover the bottom of the ring 2.5" above the intended point of impact at about 5 yard point blank distance.

View EOTech zeroing procedure here

Use 36 Yard Zero For Offset Optic?


Sure why not. 

For the best result, please make sure the offset optic aligns with the bore when canted - It minimizes offset.

Keep Constant Offset Red dot

Zero it like this if you can:

Check out canted optics zeroing tips here

45 Degree Offset aligns with bore

Which MOA Dot Size Works Well For 36 Yard Zero?

3 moa vs 6 moa dot sizes comparison

The standard 1 MOA and 2 MOA size reticles work really well, which can cover up to 1 - 2" size circle at 100 yards. 3 - 6 MOA size reticles work too, but they cover up too much of the target past 250 - 300 yards.

Any ACSS chevron tip reticle also works great with its fine aiming tip that doesn't cover up most of the target.

holosun hm3x magnifier

Features Holosun HM3X

If you can't see the target past that point, please consider using a red dot magnifier, a 3X or a 4X magnifier from Vortex Optics works very well so be sure to check them out.

Can 36 Yard Zero Work With Christmas Tree Reticle?


The 36 yard zero is optimal for high speed point and shoot carbine applications, and it's useful for holographic and reflex optics.

Meanwhile, the Christmas Tree reticle like the Horus H59 or Tremor 3 are designed for extreme long range shooting with precision in mind.

Check out more related content below:

How to increase AR15 accuracy at 300 yards

Which way to turn the turret

Sighting in at 25 yards for 100 yard zero

How to fix a scope that won't adjust correctly

Ying Xu

I'm a former US Air Force ICBM operator, and now I'm a veteran creating fun firearm accessories content. I also work as the search engine expert for