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#6203570 - 02/29/16 08:55 AM AR10 barrel length
BigPig Online   content
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Registered: 08/27/09
Posts: 9497
Loc: Forney, Tx
Going to be buying or building an AR10, going with the 308, but not sure what barrel length. I would like to keep ammo the same between the 308 bolt gun and this one. The bolt gun has a 24 inch barrel and loves 168 SMK and doesn't really care for anything lighter. Thinking of either an 18 or 20 inch barrel with muzzle break. Will the 18 shoot the 168's ok?
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#6203581 - 02/29/16 08:59 AM Re: AR10 barrel length [Re: BigPig]
QuitShootinYoungBucks Online   content
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Registered: 11/01/12
Posts: 6465
Loc: Lubbock, TX
Barrel length won't really matter, the twist rate is what will matter, and whether or not the AR10 happens to like that same load. I assume the bolt gun is 1:10 twist?
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#6203601 - 02/29/16 09:14 AM Re: AR10 barrel length [Re: BigPig]
KRoyal Online   sleepy
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Registered: 01/24/07
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Loc: Sherman/North of Dallas
My 16" 1:10 liked Chad's 168 Amax. Shot very well.
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#6203628 - 02/29/16 09:30 AM Re: AR10 barrel length [Re: QuitShootinYoungBucks]
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Originally Posted By: QuitShootinYoungBucks
Barrel length won't really matter, the twist rate is what will matter, and whether or not the AR10 happens to like that same load. I assume the bolt gun is 1:10 twist?


This
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#6203633 - 02/29/16 09:32 AM Re: AR10 barrel length [Re: KRoyal]
BigPig Online   content
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Registered: 08/27/09
Posts: 9497
Loc: Forney, Tx
Originally Posted By: QuitShootinYoungBucks
Barrel length won't really matter, the twist rate is what will matter, and whether or not the AR10 happens to like that same load. I assume the bolt gun is 1:10 twist?


Yes. Wasn't sure if barrel length and twist rate played a factor. Like if a 16 inch 1:8 wouldn't stable a 168 like a 24 inch 1:8 would. Prob going to run the 18 inch barrel than.

Originally Posted By: KRoyal
My 16" 1:10 liked Chad's 168 Amax. Shot very well.


Good to know. Prob going to hit him up for some of that to see if they both like it. I hate to say it, and it's no fault of Chad, but his bulk 168 that I got a year ago doesn't like my bolt gun.
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Originally Posted By: bill oxner
Ever spit it out rather than swallow it?

Originally Posted By: pegasaurus
Enjoy it while you can. One day you might be complaining about NOT getting random pop-ups in the morning. grin

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#6203766 - 02/29/16 10:56 AM Re: AR10 barrel length [Re: BigPig]
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
I want to see a 1:8 twist .30 cal.

The shorter barrel makes less velocity, that's all.

Look how short a .45 ACP pistol barrel is, and it stabilizes a 230 gr.
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#6203873 - 02/29/16 11:59 AM Re: AR10 barrel length [Re: BigPig]
Tactical Cowboy Online   content
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Registered: 08/23/11
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I would go 18 or 20, but I do like long barrels.
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#6203975 - 02/29/16 01:08 PM Re: AR10 barrel length [Re: FiremanJG]
BigPig Online   content
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Registered: 08/27/09
Posts: 9497
Loc: Forney, Tx
Originally Posted By: FiremanJG
I want to see a 1:8 twist .30 cal.

The shorter barrel makes less velocity, that's all.

Look how short a .45 ACP pistol barrel is, and it stabilizes a 230 gr.


1:10 was thinking about my AR15 barrel hammer

So with that theory a 4.5" barrel is enough to stabilize a .30cal? The 45 is a lot shorter that the 30cal


Edited by BigPig (02/29/16 01:09 PM)
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Originally Posted By: bill oxner
Ever spit it out rather than swallow it?

Originally Posted By: pegasaurus
Enjoy it while you can. One day you might be complaining about NOT getting random pop-ups in the morning. grin

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#6204080 - 02/29/16 02:22 PM Re: AR10 barrel length [Re: BigPig]
TexFlip Online   content
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Registered: 08/18/12
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Loc: Harris County
12" grin
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#6204144 - 02/29/16 03:14 PM Re: AR10 barrel length [Re: BigPig]
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Originally Posted By: BigPig
Originally Posted By: FiremanJG
I want to see a 1:8 twist .30 cal.

The shorter barrel makes less velocity, that's all.

Look how short a .45 ACP pistol barrel is, and it stabilizes a 230 gr.


1:10 was thinking about my AR15 barrel hammer

So with that theory a 4.5" barrel is enough to stabilize a .30cal? The 45 is a lot shorter that the 30cal


I was trying to get the point across that a 1:10 twist 16" will stabilize just as well as a 1:10 twist 26", it will just make for a slower muzzle velocity.
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#6204308 - 02/29/16 05:10 PM Re: AR10 barrel length [Re: Tactical Cowboy]
Pitchfork Predator Online   content
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Registered: 01/25/13
Posts: 10810
Loc: Murphy, TX Dickens county
Originally Posted By: BigPig
Originally Posted By: QuitShootinYoungBucks
Barrel length won't really matter, the twist rate is what will matter, and whether or not the AR10 happens to like that same load. I assume the bolt gun is 1:10 twist?


Yes. Wasn't sure if barrel length and twist rate played a factor. Like if a 16 inch 1:8 wouldn't stable a 168 like a 24 inch 1:8 would. Prob going to run the 18 inch barrel than.

Originally Posted By: KRoyal
My 16" 1:10 liked Chad's 168 Amax. Shot very well.


Good to know. Prob going to hit him up for some of that to see if they both like it. I hate to say it, and it's no fault of Chad, but his bulk 168 that I got a year ago doesn't like my bolt gun.
Originally Posted By: Tactical Cowboy
I would go 18 or 20, but I do like long barrels.


My Wilson Combat is 20 and it really likes the bulk I got from Chad in 178 Amax. up
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#6204587 - 02/29/16 08:01 PM Re: AR10 barrel length [Re: FiremanJG]
BigPig Online   content
THF Trophy Hunter

Registered: 08/27/09
Posts: 9497
Loc: Forney, Tx
Originally Posted By: FiremanJG
Originally Posted By: BigPig
Originally Posted By: FiremanJG
I want to see a 1:8 twist .30 cal.

The shorter barrel makes less velocity, that's all.

Look how short a .45 ACP pistol barrel is, and it stabilizes a 230 gr.


1:10 was thinking about my AR15 barrel hammer

So with that theory a 4.5" barrel is enough to stabilize a .30cal? The 45 is a lot shorter that the 30cal


I was trying to get the point across that a 1:10 twist 16" will stabilize just as well as a 1:10 twist 26", it will just make for a slower muzzle velocity.


Ahh gotch up
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Originally Posted By: bill oxner
Ever spit it out rather than swallow it?

Originally Posted By: pegasaurus
Enjoy it while you can. One day you might be complaining about NOT getting random pop-ups in the morning. grin

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#6204620 - 02/29/16 08:20 PM Re: AR10 barrel length [Re: BigPig]
tenyearsgone Offline
Pro Tracker

Registered: 04/21/13
Posts: 1213
I'd get the 20 inch. Unless you're going to be clearing rooms with it the loss in velocity isn't worth the loss in weight.

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