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#5576748 - 02/01/15 03:14 PM 6.5 Grendel fault to eject question
wtjim Offline
Tracker

Registered: 07/18/12
Posts: 552
Recently built a 6.5 Grendel from all quality parts. When shooting it is sub-MOA, feeds and extracts as it should. Occasionally a spent case is not being ejected. I'd say 1 in 10 which is way too much for me. The bolt is made for the barrel by a reputable manufacturer. I am wondering how to solve this. Thank you for the replies.

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#5577569 - 02/01/15 10:39 PM Re: 6.5 Grendel fault to eject question [Re: wtjim]
Bullfrog Offline
THF Celebrity

Registered: 01/21/11
Posts: 10634
Loc: N-Bedford
Savage?
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#5577583 - 02/01/15 10:51 PM Re: 6.5 Grendel fault to eject question [Re: wtjim]
wtjim Offline
Tracker

Registered: 07/18/12
Posts: 552
Sorry title should say "fail" not fault. Semi automatic AR style rifle.

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#5577626 - 02/01/15 11:16 PM Re: 6.5 Grendel fault to eject question [Re: wtjim]
Bullfrog Offline
THF Celebrity

Registered: 01/21/11
Posts: 10634
Loc: N-Bedford
Ahhhhhhh! The AR peeps will be along shortly. What ammo you running? I know they'll ask that
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#5577960 - 02/02/15 08:45 AM Re: 6.5 Grendel fault to eject question [Re: wtjim]
wtjim Offline
Tracker

Registered: 07/18/12
Posts: 552
Factory Hornady 123 SST

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#5577989 - 02/02/15 08:59 AM Re: 6.5 Grendel fault to eject question [Re: wtjim]
Precision_Shooter Offline


Registered: 02/18/09
Posts: 903
Loc: Crossroads, TX
Steel or Brass cased ammo?

Extractor Spring ok?
_________________________
"Laws that forbid the carrying of arms disarm only those who are neither inclined nor determined to commit crimes. Such laws make things worse for the assaulted and better for the assailants." - Thomas Jefferson, 1776

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#5578038 - 02/02/15 09:26 AM Re: 6.5 Grendel fault to eject question [Re: wtjim]
bside Offline
Bird Dog

Registered: 06/10/14
Posts: 314
Loc: DFW
Where is your ejection pattern when it does eject?

You're likely over or under gassed

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#5579401 - 02/02/15 09:41 PM Re: 6.5 Grendel fault to eject question [Re: wtjim]
wtjim Offline
Tracker

Registered: 07/18/12
Posts: 552
More forward than back. Gas block on straight and running carbine weight spring/buffer.

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#5579791 - 02/03/15 07:55 AM Re: 6.5 Grendel fault to eject question [Re: wtjim]
bside Offline
Bird Dog

Registered: 06/10/14
Posts: 314
Loc: DFW
You seem to be overgassed based on your description.

I would go with a Heavier buffer and optionally a stiffer spring ( Wolff).

Handy chart:




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#5581016 - 02/03/15 08:52 PM Re: 6.5 Grendel fault to eject question [Re: wtjim]
wtjim Offline
Tracker

Registered: 07/18/12
Posts: 552
bside,

Thanks for the visual, I've never seen that. I'm a lifelong bow hunter that has recently gotten into guns the past couple years. I'm gonna try a heavier buffer.

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#5581068 - 02/03/15 09:12 PM Re: 6.5 Grendel fault to eject question [Re: wtjim]
Bullfrog Offline
THF Celebrity

Registered: 01/21/11
Posts: 10634
Loc: N-Bedford
That is a cool graphic. Good reference to have
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#5581808 - 02/04/15 10:10 AM Re: 6.5 Grendel fault to eject question [Re: wtjim]
bside Offline
Bird Dog

Registered: 06/10/14
Posts: 314
Loc: DFW
you're welcome. I'm an AR guy first so I'm happy to help

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