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Black Watch Alpine


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  • 2 Post By 300_BLK
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  • 1 Post By dogmatix
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  • 3 Post By Tommy
  • 1 Post By 300_BLK

Thread: .22 BCG/Mag AR15

  1. #1
    Member Hunter_killer's Avatar
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    .22 BCG/Mag AR15



    Just wondering if there are any unloved ones out there?

    Cheers


    Sent from my iPad using Tapatalk

  2. #2
    Member 300_BLK's Avatar
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    Not good for your AR barrel....

    Better off with a dedicated 22 upper IMO
    dogmatix and Hunter_killer like this.
    Warm Barrels!

  3. #3
    Member Hunter_killer's Avatar
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    Quote Originally Posted by 300_BLK View Post
    Not good for your AR barrel....

    Better off with a dedicated 22 upper IMO
    Yeah, starting to think that. Not like it would be hard to swap out. Wouldn’t want to bugger the barrel on my LWRC.


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  4. #4
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    ar barrel has wrong twist rate for 22lr, you need a dedicated upper
    dogmatix and Hunter_killer like this.

  5. #5
    Member Hunter_killer's Avatar
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    Quote Originally Posted by gonetropo View Post
    ar barrel has wrong twist rate for 22lr, you need a dedicated upper
    Cheers, glad I put it up on here and got the advice before buying.


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  6. #6
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    also you need to sight your scope in for one or the other they dont shoot near the same spot

    had one and sold it

  7. #7
    Member jim160's Avatar
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    Mine works fine. Shoots well also. Not sure how lead proj could damage a barrel.

  8. #8
    Member Hunter_killer's Avatar
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    Quote Originally Posted by jim160 View Post
    Mine works fine. Shoots well also. Not sure how lead proj could damage a barrel.
    Someone correct me if I’m wrong, however it’s likely long term wear over prolonged periods of use of a .22 in a .223 (5.56) barrel. Someone please confirm/elaborate? Something to do with the lands and groves?

    I have fired mine with a .22 bolt and it worked fine for under 50m (grouped ok and zero stoppages), never tested it further back. I did notice a lot more build up of carbon around the charging handle, but everything else cleaned up fine. I was of the belief that the .22 BCG was good for cheap drills and short range rodent slaying.

    ?


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  9. #9
    Member dogmatix's Avatar
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    .22lr barrels damn well never wear out, so they aren’t going to damage a .223/5.56 barrel in a hurry.
    Other key moving parts of the rifle will wear out long before it ever happens.

    I took the 300_BLK’s comment as ‘not good’, ie not the correct twist rate.
    Yes the CMMG drop in BCGs and dedicated uppers are brilliant for cheap shooting.

    Here’s mine doing 96 rounds no worries or jams.

    https://m.youtube.com/watch?v=zONtQGgG1IA
    Hunter_killer likes this.
    Welcome to Sako club.

  10. #10
    Member Hunter_killer's Avatar
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    Cheers @dogmatix and co. for the feed back. Real valuable. Will keep my eye out for an unloved dedicated upper.


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  11. #11
    Member dogmatix's Avatar
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    Make sure your lower has a milspec trigger or something like a Hiperfire trigger with a heavy hammer fall.
    You need that to ensure ammo ignition.
    Here’s my CMMG upper on a Schmeisser lower with the proper CMMG charging handle, dummy locked in place plastic forward asssit, add on pistol case deflector and half size dust cover.
    I have around 4x25 round mags and 5x10 rounders.

    Name:  0479E90F-DF41-4320-BE34-0FC888FDFD89.jpeg
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Size:  1.72 MB
    planenutz and Hunter_killer like this.
    Welcome to Sako club.

  12. #12
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    Out of curiosity what does it weigh?

  13. #13
    Member dogmatix's Avatar
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    Fraction less than a normal centrefire AR, as it’s minus the gas block, tube and the BCG is much lighter.
    The receiver is a standard AR one, so is the handguard.
    Hunter_killer likes this.
    Welcome to Sako club.

  14. #14
    Member Tommy's Avatar
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    Quote Originally Posted by dogmatix View Post
    Fraction less than a normal centrefire AR, as it’s minus the gas block, tube and the BCG is much lighter.
    The receiver is a standard AR one, so is the handguard.
    The bolt is half the mass too I reckon, and a buffer and spring are unnecessary (don't be a fucktard like me and forget to put it back in when you put a 223 upper back on. Pain in the neck trying to fish the bcg back out past the buffer detent..)
    Identify your target beyond all doubt

  15. #15
    Member 300_BLK's Avatar
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    FIring bare lead projectiles in a barrel inevitably leads to lead fouling, which will require cleaning.

    The real nasty issue you can have is that because of the design of the chamber adaptor on the end of the .22lr conversion bolts they do not guide the 22 projectile completely to the lands. This small jump made by the 22 lr projectile made of soft lead will slowly fill part of the chamber and leade and can lead to dangerous pressure spikes should you put in your original bolt and fire regular 223/5.56.

    This can be relieved by regular cleaning etc but why muck around with a conversion that can have issues with reliability as a .22lr and cause major issues with 5.56mm.

    Just my 2c
    Hunter_killer likes this.
    Warm Barrels!

 

 

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