Can't pull back charging handle after round is chambered.

[Jeff]

All,

This is my first AR10 build.  When the gun is not loaded, the charging handle and bcg works great.  When I chamber a bullet, I can only pull the charging handle about a half inch. I have to take the gun apart to get the round out. 

Any suggestions on why this is happening?

Also, the brass is scraped up pretty  good.

thanxs!

Edited February 11, 2017 by Jeff

[DNP]

Build details?  Upper, lower, what do you got?

[Matt.Cross]

Rough chamber, probably from a dull reamer. You need your chamber touched up with a sharp reamer, followed by a chamber polishing. A decent gunsmith can do both.

[Jeff]

PSA upper and lower

anderson 20 inch barrel

Toms Tactical Black Nitride 308 Bolt Carrier Group

[Jeff]

1 minute ago, Matt.Cross said:

Rough chamber, probably from a dull reamer. You need your chamber touched up with a sharp reamer, followed by a chamber polishing. A decent gunsmith can do both.

Thanxs Matt.  I got a guy that can do that.

[shepp]

Welcome to the forum Jeff feel free to tell us about yourself in the intro section

[Jeff]

Thanxs Shepp, will do

[98Z5V]

17 minutes ago, Matt.Cross said:

Rough chamber, probably from a dull reamer. You need your chamber touched up with a sharp reamer, followed by a chamber polishing. A decent gunsmith can do both.

He nailed it. Might be a tight chamber, too, but that's not too common anymore. 'Bout 5 years ago, though...  that shiit was common.

[Jeff]

15 minutes ago, 98Z5V said:

He nailed it. Might be a tight chamber, too, but that's not too common anymore. 'Bout 5 years ago, though...  that shiit was common.

Thanxs Bud.  I'll look into it.

[washguy]

Hey Jeff     Ive found that 99% of the 308's I build...if you put a round in it being a brand new build..and you don't fire the rifle...you will be scratchin your azz on how in the heck to get the unfired round  out...So I never put a round in a new build unless im gonna fire it...just a new tight chamber...I bet if you put a round in there and fire the rifle you wont have the problem....aint no big deal...don't let anyone be reaming or polishing on that chamber until you fire a few rounds and see what shakes out         Wash

[98Z5V]

1 minute ago, Jeff said:

Thanxs Bud.  I'll look into it.

Hey Jeff, just read your intro - were you putting reloads in that?  Sticking reloads?  Might be neck diameter, if it was...

[survivalshop]

Have you had the Head Space checked ? 

How much Lubricant used ?

As said , inspect Chamber for roughness .

 Cycle the well lubed action over & over again , until it loosens up . ( with out ammo )

 As said , not usual for a tight chamber on a new build to be too tight to cycle properly with a loaded round used as a Dummy round.

Also , as brought up , what ammo are you testing it with ?

Edited February 11, 2017 by survivalshop

[Jeff]

8 hours ago, 98Z5V said:

Hey Jeff, just read your intro - were you putting reloads in that?  Sticking reloads?  Might be neck diameter, if it was...

No reloads. Factory ammo to start

 

8 hours ago, washguy said:

Hey Jeff     Ive found that 99% of the 308's I build...if you put a round in it being a brand new build..and you don't fire the rifle...you will be scratchin your azz on how in the heck to get the unfired round  out...So I never put a round in a new build unless im gonna fire it...just a new tight chamber...I bet if you put a round in there and fire the rifle you wont have the problem....aint no big deal...don't let anyone be reaming or polishing on that chamber until you fire a few rounds and see what shakes out         Wash

Ok, will do

[98Z5V]

11 hours ago, Jeff said:

No reloads. Factory ammo to start

Good man. 

[dprice38444]

did you clean the chamber/bolt area before assembly? dirt

[washguy]

51 minutes ago, dprice38444 said:

did you clean the chamber/bolt area before assembly? dirt

DB   He prolly figured out his problem since he posted this back in February            Wash   

[dprice38444]

i had what i think was a piece of metal/crud in my brand new barrel.(new install)after i got the carrier to pop out,all worked fine no issues.