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Thread: 12.5" barrel

  1. #1
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    12.5" barrel

    So, thinking of doing a 12.5", my first of this length. I'm considering a "mini precision" type build with the appropriate optic to be debated later. Question is on the gas system for those who have used 12.5's, carbine or does anyone utilize a mid length? This would be initially on a pistol lower and maybe later an SBR'rd one. I was originally looking at a 11.5" but already have a BCM pistol. Obviously, a quality SS barrel, maybe a Bartlein? I threw around the idea of 6.5G or 6mm ARC but didn't want to get into another caliber right now.

    There's no illusions of SHTF, end of the world use, etc, just a fun gun to enjoy like most of the others.
    GET IN YOUR BUBBLE!

  2. #2
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    Google the Hodge 12.5” barrel optimized for M855A1/suppressor use.


    Sent from my iPhone using Tapatalk

  3. #3
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    Triarc and Noveske make 12.5's in mid length
    May God have mercy upon my enemies, because I won't.

  4. #4
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    Our 12.5" MRC barrel does not use either length.

    Black River Tactical
    BRT OPTIMUM Hammer Forged Chrome Lined Barrels - 11.5", 12.5", 14.5", 16"
    BRT EZTUNE Preset Gas Tubes - PISTOL, CAR, MID, RIFLE
    BRT Bolt Carrier Groups M4A1, M16 CHROME
    BRT Covert Comps 5.56, 6X, 7.62

  5. #5
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    Look at Black River Tactical's 12.5" bbl. The gas system is optimized for that specific barrel length.
    https://blackrivertactical.ecwid.com...rel-p206842468

    Edited to add: Looks like Clint beat me to it. Either way, I've been happy with his barrels and the polygonal rifling is a plus for velocity.
    Last edited by opngrnd; 07-21-20 at 13:52.

  6. #6
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    So Clint, with match ammo(69/77 SMK/TMK), factory or hand loaded, what is a realistic accuracy expectation considering an accomplished precision shooter? Assuming a rested position, bipod and rear bag at 100 no account for wind errors.(no I threw it in the bag, forgot my bipod so I used a Cheerios box, etc, etc excuses)

    By chance do you offer a heavy profile or SS options?

    Mark

    Quote Originally Posted by Clint View Post
    Our 12.5" MRC barrel does not use either length.

    GET IN YOUR BUBBLE!

  7. #7
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    Quote Originally Posted by mark5pt56 View Post
    So Clint, with match ammo(69/77 SMK/TMK), factory or hand loaded, what is a realistic accuracy expectation considering an accomplished precision shooter? Assuming a rested position, bipod and rear bag at 100 no account for wind errors.(no I threw it in the bag, forgot my bipod so I used a Cheerios box, etc, etc excuses)

    By chance do you offer a heavy profile or SS options?

    Mark
    I'm not Clint, but his 16" MPR barrel using the same rifling gave me an average of .769" over five 5-shot groups. Ammo was 77gr SMKs over H322. It might have just been a great day for me, but I'm not an accomplished precision shooter and I still averaged 1.1" with other decent loads, such as 77gr TMKs over XBR.

  8. #8
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    The Centurion Arms 12.5" Barrel is quite accurate. Chrome Lined, hammer forged, carbine gas. 1.18" 5 shot grouping at 100 yards using a 8x scope from the prone with CBC 556 77gr OTM.
    Attachment 63191
    Last edited by nightchief; 07-21-20 at 14:47.

  9. #9
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    Expectation is around MOA provided everything else is done right.

    We do offer a heavier profile in 16".

    Most people are asking for med-light profiles, which is what we did for these recent 11.5/12.5/14.0 barrels.

    Quote Originally Posted by mark5pt56 View Post
    So Clint, with match ammo(69/77 SMK/TMK), factory or hand loaded, what is a realistic accuracy expectation considering an accomplished precision shooter? Assuming a rested position, bipod and rear bag at 100 no account for wind errors.(no I threw it in the bag, forgot my bipod so I used a Cheerios box, etc, etc excuses)

    By chance do you offer a heavy profile or SS options?

    Mark
    Black River Tactical
    BRT OPTIMUM Hammer Forged Chrome Lined Barrels - 11.5", 12.5", 14.5", 16"
    BRT EZTUNE Preset Gas Tubes - PISTOL, CAR, MID, RIFLE
    BRT Bolt Carrier Groups M4A1, M16 CHROME
    BRT Covert Comps 5.56, 6X, 7.62

  10. #10
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    How much do you want to spend.

    If you want to spend some money I am very happy with the small gas port Hodge (sub MOA) and if you want wicked accuracy the V7 12.5 is no joke.

    DD makes a 12.5 now as does BCM. All my DD have been 1 to 1.5 moa guns.

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