Ar 15 low

[Dirtautoguy]

I have a ar that I haven't shot in a bit and today me and my wife got it out. I had it sighted in at 25 or 50 yards I can't remember which it's whichever the military usually recommends. Anyway we weren't shooting from very far away maybe 15 yards? Or less just at card bored boxes. Anyway it was very consistent groups almost a holes inside of each other. However it was shooting low half an inch low. Would that just be because it was so close? It was my wife's first time shooting it with peep sights that's why we were so close.

[DaveH71]

The standard military zero for the AR is at 25 meters at a 300 meter sized target.

 

If you had it zeroed at 25 or 50 yards it should have shot a tiny bit high at 15 yards. Sounds like your wife has her sight alignment off just a tiny bit, tell her to raise the barrel a smidge when she shoots. She should be

 

aiming center mass of whatever she is shooting at, the front sight post should be cutting the target in half so to say.

[hollis092]

You have to account for the projectile's trajectory.

 

When you are sighting in an optic, you want to have it zeroed to the normal range you would shoot. Each caliber and respective load (ie, grains of powder, projectile weight, primer used) will result in a different trajectory.

 

If you are going for a 200 yd zero, which is common for a lot of hunting rounds, for example, a .270 Win zeroed at 25 yds, will be 2-2.5" high at 100 yds, and back on at 200. You would need to determine how you want it zeroed based on your shooting preferences and the bullet trajectory.

 

I have one of my 6.8mm AR's set to zero at 50 meters, that results in roughly 4.5-5" high at 100 meters. (I am using meters as I have been spoiled with MRAD reticles). With my reticle, I can shoot zeroed at 50 meters, then if I want to zero at 100, I just move it 4.5-5 clicks.

 

Again, it's all about what your normal shooting distance is and what the bullet's trajectory would be.