Could this cause accuracy and consistency issues in an AR10?

[old11bravo]

QUESTIONS.....?

[baih777]

That's normal.

[baih777]

What ammo have you tried?

[97F1504RAD]

Why are you not using a crush washer like normal or shims? Did that comp come with the jamb nut or did you just decided to do that?

Also what ammo have you been shooting and what kind of groups are u getting?

It also appears from your pictures that the crown on the barrel has some pretty severe crud on it.

[PyroFox79]

Its ruined. Send everything to me for disposal

[Dark Hunt]

The carbon on the brake's threads doesn't matter, it's a lot larger in diameter than the bore.

[TurboS600]

Nothing on the threads could have caused your problems. The diameter of those is so much larger than the threads that there's no way they could cause any deflection of the round. HOWEVER, as 97F150 said there is some severe crud on the crown of the barrel. It also appears that some of that crud may even be inside the lands and grooves at the end of the barrel itself. I'd try cleaning the crap out of the end of that barrel and then go with your new trial of whatever it is your going to replace the brake with. Good luck.

[97F1504RAD]

One more thing and I am not sure if it is just the pictures or if I am actually seeing something inside the brake, but the image that shows down inside the brake appears as though maybe something has been hitting that inner edge where the threads end and the hole begins.

And for the record, I have a Mega .308 Barrel myself and it is a great shooter. And the fact that u said it began shooting good and got worse leads us to the things we speak about in here.

If your going to reuse that brake make sure you install it correctly with a crush washer, but you need to start with cleaning that crown and inside the barrel like Turbo said.

Can you tell us what ammo you are using and what kind of groups you are getting.

[sigstroker]

Shoot it without the brake and see how it does.

[ZombieLivesMatter]

What ammo are you using? When I had a AR10, the ammo really mattered, when I used regular 308 I'd get random 2-5" groups at 100 yards. But when I used used Federal Gold Medal Match 308 ammo I always got 1"moa or better at 100 yards.

[17+1]