Somewhere I read that you can only shoot 80Grain projectiles out of a throated match barrel. So what is a throated barrel? I thought all AR barrels were the same as far as throats (yes I know ,223 and 5,56 the 2 are different sizes)

Didn't somebody say that the SF were using 80 grain bullets out of a standard M4? If so how can they if they are not throated barrels?

I'm confused

ammoman. "80 grain match ammo. do not buy unless you have a throated match gun."

i'd assume my 1/7 will stabilize, but a 5.56 ain;t match as far as i knowzick.

Someone can probably explain better than I but here goes.

The chamber of the barrel is slightly longer than normal allowing ammo with slightly longer OAL (overall length) to seat properly.

Ammo with 80 grain bullets tends to be slightly more OAL hence the requirement for a throated chamber.

If you don't have a  match rifle with this modification, the round will not fully seat in the chamber.  Your rifle will prbably jam and fail to feed/fire who knows what.

Hope that helps.

Non-chrome lined.


As per Troy---"Go chrome or go home"