18.5" thin barrel vs heavy barrel - potential accuracy differences? - Page 2
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Thread: 18.5" thin barrel vs heavy barrel - potential accuracy differences?

  1. #11
    XCR Guru mjorin's Avatar
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    I remember the "old days" when we could buy cheap Norinco blasting ammo. That is until Bush senior put the screws to us. $85 bucks a case for brass .223 or 7.62X39.
    Bravo likes this.
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  2. #12
    Newbie driller212's Avatar
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    This is a good read. I am having accuracy issues with my M that has a light barrel. It is stringing groups, and the best group I can get with hand loads so far is 2.5MOA. I want to shrink these groups and since my M is older I will look into getting the new muzzle brake, and gas block.

  3. #13
    XCR Guru fmunk's Avatar
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    Quote Originally Posted by driller212 View Post
    This is a good read. I am having accuracy issues with my M that has a light barrel. It is stringing groups, and the best group I can get with hand loads so far is 2.5MOA. I want to shrink these groups and since my M is older I will look into getting the new muzzle brake, and gas block.
    Look up navalbeaver's thread on this issue. RA has a fix. However, 2 MOA or so with both the -L and the -M with factory ammo is considered acceptable.
    Fool-proofing serves only one purpose: identify bigger fools.

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  5. #14
    XCR Guru mjorin's Avatar
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    Quote Originally Posted by driller212 View Post
    This is a good read. I am having accuracy issues with my M that has a light barrel. It is stringing groups, and the best group I can get with hand loads so far is 2.5MOA. I want to shrink these groups and since my M is older I will look into getting the new muzzle brake, and gas block.
    I would get right on that. Regardless, get the upgrade. Then you'll know for sure if its the rifle or your ammo.
    "Spes Mea in Deo Est"--My hope is in GOD
    The antidote for fifty enemies is one friend.--Aristotle

  6. #15
    Newbie driller212's Avatar
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    Ok will do. Here are some groups from the other day. Also, I checked and the gas tube does have some play towards the rear end, that may be the culprit.
    Last edited by driller212; 03-05-2016 at 09:28 PM.
    Astute Observer likes this.

  7. #16
    Newbie XcrmCA's Avatar
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    My xcrm has the same issue(loose gas block/gas tube) and it's at wolverine now for upgraded by Dave as well. I was told that I wont get a new brake(3 side port one) since it is no longer a required part for the conversion according to RA

  8. #17
    Newbie Astute Observer's Avatar
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    OP here. I got the gas block and gas tube replaced on my rifle's light barrel just a couple weeks ago. Shot it this weekend, and it improved the groupings of the light barrel significantly. Still not as good as the heavy barrel, but those groups definitely tightened up compared to last year. Will post photos in a couple days
    Merlin likes this.

  9. #18
    XCR Guru navalbeaver's Avatar
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    Quote Originally Posted by Astute Observer View Post
    OP here. I got the gas block and gas tube replaced on my rifle's light barrel just a couple weeks ago. Shot it this weekend, and it improved the groupings of the light barrel significantly. Still not as good as the heavy barrel, but those groups definitely tightened up compared to last year. Will post photos in a couple days
    Good to hear.

  10. #19
    Newbie driller212's Avatar
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    Had my gas block and tube replaced by wolverine and here are my best groups (still working on a load that is best). My best groups were with 168 gr. but I want to try 180 gr and see how that does. These groups were at 105.5 yds.






  11. #20
    XCR Guru fmunk's Avatar
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    Just curious... what was the turn around time for Wolverine?
    Fool-proofing serves only one purpose: identify bigger fools.

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