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#6056271 - 11/29/15 01:48 PM How short can I go on a .308 barrel?
Tff caribou Offline
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Registered: 08/27/12
Posts: 3181
Loc: Watauga, TX
Got a remmy 700 in .308 that in really contemplating having Morgan cut off and recrown. Or maybe put a muzzle brake on.

It's just a hunting rifle,and the stand I hunt in is pretty tight so I want to make it as handy as possible. Also planning on picking up a magpul stock as soon as I sell another rifle. I know I can go down to 16" legally, but I'm wondering if any gains will be worth it to leave it at 19 or 20". All shots will be under 300 yards. I know the accuracy won't be effected, but don't want to lose too much MV. It's a 24" right now.


Edited by Tff caribou (11/29/15 08:46 PM)
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#6056309 - 11/29/15 02:09 PM Re: How short can I go one a .308 barrel? [Re: Tff caribou]
boonee Offline
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Registered: 01/09/11
Posts: 2154
Loc: Mesquite/Canton
Mine is cut off to 16 1/2 and threaded for my suppressor. I use it for hog hunting mostly under 150 yards where I hunt. I built a 18" AR for the same purpose, not shooting very far.
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#6056322 - 11/29/15 02:15 PM Re: How short can I go one a .308 barrel? [Re: Tff caribou]
KRoyal Online   sleepy
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Registered: 01/24/07
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Loc: Sherman/North of Dallas
I've shot out to 800 yards with my 16" AR 308 running about 2510 FPS using 168gr Amax.
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#6056436 - 11/29/15 03:09 PM Re: How short can I go one a .308 barrel? [Re: Tff caribou]
Tff caribou Offline
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Registered: 08/27/12
Posts: 3181
Loc: Watauga, TX
Sounds like 16 will be the way I wanna go then. Then put a brake on it I think.
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#6056439 - 11/29/15 03:10 PM Re: How short can I go one a .308 barrel? [Re: Tff caribou]
Cleric Offline
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Registered: 03/11/12
Posts: 2779
I would consider 14.5 and pin the brake. Save a bit more length

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#6056600 - 11/29/15 04:34 PM Re: How short can I go one a .308 barrel? [Re: Tff caribou]
scottfromdallas Offline
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Registered: 06/23/15
Posts: 473
Loc: TX
I'm getting 2600 with 168 Ballistic Tips from my 16" FNAR.
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#6056606 - 11/29/15 04:37 PM Re: How short can I go one a .308 barrel? [Re: scottfromdallas]
KRoyal Online   sleepy
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Registered: 01/24/07
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Loc: Sherman/North of Dallas
Originally Posted By: scottfromdallas
I'm getting 2600 with 168 Ballistic Tips from my 16" FNAR.


Im sure it's possible I was shooting Chad's 168 Amax bulk ammo if you load I'm sure you could get more than 2510 and it being a bolt gun you can push it harder than the gas gun.
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#6056627 - 11/29/15 04:50 PM Re: How short can I go one a .308 barrel? [Re: Tff caribou]
scottfromdallas Offline
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Registered: 06/23/15
Posts: 473
Loc: TX
I was shocked it lost so little velocity. I was using Alliant Power Pro MR2000. Wasn't even max load. FNAR is gas rifle but I didn't see any pressure signs.
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#6056638 - 11/29/15 04:54 PM Re: How short can I go one a .308 barrel? [Re: Tff caribou]
KRoyal Online   sleepy
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Registered: 01/24/07
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Loc: Sherman/North of Dallas
Yea I know the FNAR is gas gun, I was talking about the OP Rem 700 being a bolt gun. I was looking at SBR'ing my LR308 and was surprised how little MV it lost from 20" down to 12" wasn't really all that terrible.
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#6057003 - 11/29/15 07:24 PM Re: How short can I go one a .308 barrel? [Re: Tff caribou]
charlesb Offline
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Registered: 04/07/10
Posts: 1499
Loc: West Texas mountains
I wouldn't go any shorter than 18" on a hunting rifle. Shorter barrels are a lot noisier, and do not perform as well, no matter what any 16.25" barrel owner might tell you.

Physics... It's the law.
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#6057010 - 11/29/15 07:26 PM Re: How short can I go one a .308 barrel? [Re: Tff caribou]
KRoyal Online   sleepy
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Registered: 01/24/07
Posts: 14427
Loc: Sherman/North of Dallas
Hmm id say steel going ping at 800 and a chrono in front of the barrel using the average of 10 shots real world experience doesn't lie. I shoot mine suppressed so noise doesn't bother me YMMV.
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#6057077 - 11/29/15 07:50 PM Re: How short can I go one a .308 barrel? [Re: Tff caribou]
Colt W. Knight Offline
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Registered: 03/22/11
Posts: 2083
Loc: West Virginia
Here is a neat ballistic test where a guy shot four types of ammo, and cut one inch off his barrel from 28-16"
http://rifleshooter.com/2014/12/308-winc...ity-28-to-16-5/

In my opinion, that loud banging noise of the longer barrel hitting the blind is a bigger issue than the 100 fps velocity you loose from ~20" barrel to 16.5''.



Edited by Colt W. Knight (11/29/15 08:03 PM)

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#6057204 - 11/29/15 08:37 PM Re: How short can I go one a .308 barrel? [Re: charlesb]
FiremanJG Offline
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Registered: 12/16/08
Posts: 20125
Loc: Wolfe City, TX
Originally Posted By: charlesb
I wouldn't go any shorter than 18" on a hunting rifle. Shorter barrels are a lot noisier, and do not perform as well, no matter what any 16.25" barrel owner might tell you.

Physics... It's the law.



bs

Did you have a TIA?
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#6057226 - 11/29/15 08:44 PM Re: How short can I go one a .308 barrel? [Re: charlesb]
Tff caribou Offline
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Registered: 08/27/12
Posts: 3181
Loc: Watauga, TX
Originally Posted By: charlesb
I wouldn't go any shorter than 18" on a hunting rifle. Shorter barrels are a lot noisier, and do not perform as well, no matter what any 16.25" barrel owner might tell you.

Physics... It's the law.



Obviously, I'm no expert on short barrels, since I'm the one asking the question. But that would depend on your definition of performance. Being exceptionally handy means more to me that a little loss in MV.
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#6057258 - 11/29/15 08:57 PM Re: How short can I go one a .308 barrel? [Re: Tff caribou]
FiremanJG Offline
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Registered: 12/16/08
Posts: 20125
Loc: Wolfe City, TX
It will "perform" fine. That post should be stricken from the record. We are all dumber from having read it.
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