AR-15 Isn't Shooting Accurately

BrandonFromTampa · Jul 3, 2022

I bought an AR-15 in 6.5 Grendel by some guy on Gunbroker.com years ago, and it has never grouped well. I have tried swapping out rings and scopes, and I know that I shoot other AR platform rifles better, so after several years and many attempts to solve the problem, I've come to the conclusion that it's the rifle.

Is there anything mechanically that can affect accuracy that I can fix. I might go ahead and buy a $300 barrel, but I just wanted to do a little research before I did that. I'd hat to spend the money and find out that something just needed to be tightened.

Sorry if this topic has been beaten to death on the forum- I sort of expected that it had been- but I did a search and didn't find anything.

Nature Boy · Jul 3, 2022

When you say it won’t group well, what are you comparing it to? Bolt action target rifles? Other AR platforms you own?

What does an average group measure?

BrandonFromTampa · Jul 3, 2022

Nature Boy said:
When you say it won’t group well, what are you comparing it to? Bolt action target rifles? Other AR platforms you own?

What does an average group measure?

Other AR platforms that I own, but it's really bad, I'm talking 6" at 100yards bad.

Nature Boy · Jul 3, 2022

BrandonFromTampa said:
Other AR platforms that I own, but it's really bad, I'm talking 6" at 100yards bad.

Oooo, that’s bad.

Having run through the gamut of the obvious I’d also consider re-barreling or selling it

Life it too short to futz around with a rifle that won’t shoot to it’s potential.

C-grunt · Jul 3, 2022

First check the barrel nut and the muzzle device to see that both are torqued correctly.

gotboostvr · Jul 3, 2022

Check the crown of the barrel itself as well.

I'm assuming you've played with a few different loadings as well.

edwardware · Jul 3, 2022

BrandonFromTampa said:
. . . 6" at 100yards bad.

Ok, that's bad.

Check for loose or rocking bits (barrel, nut, sights), try a different scope, borescope the barrel if you have access to one. . . then give up.

If you like the gun and caliber, buy a new barrel.

243winxb · Jul 3, 2022

gotboostvr said:
Check the crown of the barrel itself

This. Take off any muzzle brake, flash hider. Do buy good ammo.

NIGHTLORD40K · Jul 3, 2022

Loose barrel nut or flash hider, dinged crown..... extremely sloppy upper/lower receiver gap perhaps?

Jonny2guns · Jul 3, 2022

That's a pretty big group for 100yrds. Almost sounds like it was sold knowing something was wrong with it. Double check and triple check everything, hopefully it's something obvious and an easy fix.

AR-15 Isn't Shooting Accurately

BrandonFromTampa

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Nature Boy

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BrandonFromTampa

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Nature Boy

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243winxb

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NIGHTLORD40K

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