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Max Online: 16728 @ 03/25/12 08:51 AM
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#6528086 - 11/05/16 02:44 PM Who has broken a Grendel bolt?
ImTheReasonDovesMourn Online   content
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Registered: 08/04/12
Posts: 1136
Loc: Greenville, TX
I broke one. It was the bolt that Brownell's includes with their barrels. It probably had a round count of 300 when it broke. I was shooting handloads that were under the book maximum charge. Anyone else break one?
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#6528096 - 11/05/16 03:03 PM Re: Who has broken a Grendel bolt? [Re: ImTheReasonDovesMourn]
Creedmoor Offline
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Registered: 09/12/16
Posts: 1086
Doesn't sound too good. Is it a Brownells re-branded or a name brand bolt? Not that it matters at this point, but it would be good info to share.

In the end Brownells will probably make it good with no questions asked. They're top notch folks.
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#6528122 - 11/05/16 03:40 PM Re: Who has broken a Grendel bolt? [Re: ImTheReasonDovesMourn]
HandgunHTR Online   content
Woodsman

Registered: 11/10/14
Posts: 120
Loc: Cypress, TX
If you shoot a Grendel AR long enough and you are not using an AR Performance Superbolt or an Alexander Arms beefed up bolt, chances are you are going to break a bolt.
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#6528314 - 11/05/16 07:06 PM Re: Who has broken a Grendel bolt? [Re: ImTheReasonDovesMourn]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 18769
Loc: Wolfe City, TX
I broke a .223 bolt, once. Snapped it in half, right in the middle. Lack of oil, was my fault.
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#6528338 - 11/05/16 07:27 PM Re: Who has broken a Grendel bolt? [Re: Creedmoor]
ImTheReasonDovesMourn Online   content
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Registered: 08/04/12
Posts: 1136
Loc: Greenville, TX
Originally Posted By: Creedmoor
Doesn't sound too good. Is it a Brownells re-branded or a name brand bolt? Not that it matters at this point, but it would be good info to share.

In the end Brownells will probably make it good with no questions asked. They're top notch folks.


The barrel is an unbranded Satern barrel, I'm assuming the bolt is the same. Grendel bolts are prone to breakage because the walls of the bolt face are so thin. I figured it would break eventually. Just curious how many others have broken bolts.
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#6528340 - 11/05/16 07:29 PM Re: Who has broken a Grendel bolt? [Re: HandgunHTR]
ImTheReasonDovesMourn Online   content
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Registered: 08/04/12
Posts: 1136
Loc: Greenville, TX
Originally Posted By: HandgunHTR
If you shoot a Grendel AR long enough and you are not using an AR Performance Superbolt or an Alexander Arms beefed up bolt, chances are you are going to break a bolt.


I ordered the Alexander bolt before I even left the range.
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#6528343 - 11/05/16 07:30 PM Re: Who has broken a Grendel bolt? [Re: ImTheReasonDovesMourn]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 18769
Loc: Wolfe City, TX
Originally Posted By: ImTheReasonDovesMourn
Originally Posted By: HandgunHTR
If you shoot a Grendel AR long enough and you are not using an AR Performance Superbolt or an Alexander Arms beefed up bolt, chances are you are going to break a bolt.


I ordered the Alexander bolt before I even left the range.


That's my dawg!
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#6528355 - 11/05/16 07:42 PM Re: Who has broken a Grendel bolt? [Re: FiremanJG]
ImTheReasonDovesMourn Online   content
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Registered: 08/04/12
Posts: 1136
Loc: Greenville, TX
Originally Posted By: FiremanJG
Originally Posted By: ImTheReasonDovesMourn
Originally Posted By: HandgunHTR
If you shoot a Grendel AR long enough and you are not using an AR Performance Superbolt or an Alexander Arms beefed up bolt, chances are you are going to break a bolt.


I ordered the Alexander bolt before I even left the range.


That's my dawg!



banana
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#6528377 - 11/05/16 07:59 PM Re: Who has broken a Grendel bolt? [Re: ImTheReasonDovesMourn]
OkieDokie Online   happy
Tracker

Registered: 01/28/08
Posts: 814
Loc: southern OK
Originally Posted By: ImTheReasonDovesMourn
Originally Posted By: FiremanJG
Originally Posted By: ImTheReasonDovesMourn
Originally Posted By: HandgunHTR
If you shoot a Grendel AR long enough and you are not using an AR Performance Superbolt or an Alexander Arms beefed up bolt, chances are you are going to break a bolt.


I ordered the Alexander bolt before I even left the range.


That's my dawg!



banana

Well I better order a spare bolt cause I have the same barrel and bolt as you and I have more rounds than that. Mine must be a good one because J.G. Shot it and we all know how he can break an AR. grin
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#6528380 - 11/05/16 08:05 PM Re: Who has broken a Grendel bolt? [Re: OkieDokie]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 18769
Loc: Wolfe City, TX
True story!

Yours HAS! to be made of Unobtanium.
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#6528385 - 11/05/16 08:13 PM Re: Who has broken a Grendel bolt? [Re: HandgunHTR]
Korean Redneck Online   content


Registered: 06/24/09
Posts: 2355
Loc: Houston
Originally Posted By: HandgunHTR
If you shoot a Grendel AR long enough and you are not using an AR Performance Superbolt or an Alexander Arms beefed up bolt, chances are you are going to break a bolt.


What makes these bolts less susceptible to breakage?
I've heard that this is a weak point in the design of the caliber in an ar frame.

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#6528426 - 11/05/16 08:58 PM Re: Who has broken a Grendel bolt? [Re: ImTheReasonDovesMourn]
Tim9880 Online   content
Bird Dog

Registered: 04/08/12
Posts: 478
Did yours have the .125 or .136 bolt face? If you know, just curious.

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#6528470 - 11/05/16 09:52 PM Re: Who has broken a Grendel bolt? [Re: Korean Redneck]
HandgunHTR Online   content
Woodsman

Registered: 11/10/14
Posts: 120
Loc: Cypress, TX
Not sure about the Alexander Arms bolts, but here is why ARP bolts are good to go:

Quote:
We have taken the current AR15 bolt to the next level by completely redesigning the lug and cam pin area as well using a stronger 9310 Vac-ARC alloy to make this the most durable bolt on the market. Notice the thicker web between the recess and the lugs and the larger radius at the root of the lugs. The area of attachment and strength was increased by 24%.
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#6528509 - 11/05/16 10:47 PM Re: Who has broken a Grendel bolt? [Re: Tim9880]
ImTheReasonDovesMourn Online   content
Pro Tracker

Registered: 08/04/12
Posts: 1136
Loc: Greenville, TX
Originally Posted By: Tim9880
Did yours have the .125 or .136 bolt face? If you know, just curious.


It was the type 2 bolt, .136.
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