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Rebarreling Rimfire?

SP45
Was having a discussion about rebarreling a 22 LR. The rate of twist on a RF is slow compared to centerfire. How would a 22LR perform if you used a Centerfire barrel with the faster rate of twist ie, 9". Anyone had any first hand experience with this.
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Comments

13 comments

Date Votes
  • Nwcid
    Twist has little to do with speed. Twist has to do with bullet length.

    If you are shooting the 60gr bullets (long length) you need a 1:9 twist barrel.

    If you are shooting standard ~35-40gr bullets (normal length) they 1:16 is correct.

    This is the same for any rifle and has nothing to do with RF vs CF.


    Oh and there are already drop in barrels for the 10/22 in 1:9 for sale and I am sure they are made for other guns.
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  • RCrosby
    I used to have adapters that let me shoot .22 L.R. ammo in my .222 Remington and .222 Remington Mags. None of them could manage much better than an inch or so at 25 yards and I eventually gave them up.
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  • 62fuelie
    If you decide to try it, Brownell's offers .22 rf liners and a piloted deep drill bit to allow you to drill out your present barrel and insert a replacement while keeping the factory markings on the outside of the barrel.
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  • perry shooter
    another thing to consider is a 22 Long Rifle does not have the same Bore size as a center-fire 222,223,22/250 ETC all of those are .224 inch . a 22 rim fire most times is between 218-220 .
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  • Justjump
    quote:Originally posted by 62fuelie
    If you decide to try it, Brownell's offers .22 rf liners and a piloted deep drill bit to allow you to drill out your present barrel and insert a replacement while keeping the factory markings on the outside of the barrel.


    The liners work very well. You will still need to recut the chamber.
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  • beantownshootah
    quote:Originally posted by SP45
    Was having a discussion about rebarreling a 22 LR. The rate of twist on a RF is slow compared to centerfire. How would a 22LR perform if you used a Centerfire barrel with the faster rate of twist ie, 9". Anyone had any first hand experience with this.


    The drop in .22LR conversion units for AR-15 rifles do this very thing.

    They'll work OK, but the combination of fast twist and slightly oversized barrel generally lead to mediocre accuracy.

    Supposedly the Aguila "subsonic sniper" 60 grain bullets do well here, since the heavier weight bullets like the faster twist.
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  • ALFONSE
    I had first hand experience with a slow gunsmith once and he couldn't perform at either rate.
    None of you guys have even touched SP45's question. Please do not muck up the forums with your self proclaimed expertise. Al
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  • RCrosby
    Relax, Alphonse. As I read them, many if not all, responses, have been relevant.
    And your contribution to the discussion is.......? [:D]
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  • tsr1965
    SP45,

    As has been stated, the twist rates between most centerfire barrels, would be a problem, as also would be the internal dimensions. You could special order a barrel to suit, but then it would be a rimfire barrel[:D].

    If you are having problems with a worn out 22LR barrel, and are willing to take on a little project, you could reline it yourself. It would cost the liner, drill bit, and some J-B Weld is all.

    Best

    quote:I had first hand experience with a slow gunsmith once and he couldn't perform at either rate.
    None of you guys have even touched SP45's question. Please do not muck up the forums with your self proclaimed expertise. Al

    ALFONSE,

    Hmmmm...an all capitals kinda expert I see.

    I would assume that the slow gunsmith was performing at your rate?

    Since you seemed to add so much of your expertise to this thread, let me say this. From what I seen, every one added something, except yourself. Furthermore, before you go and post something like that, you should put on your reading glasses and a different attitude. I am not so sure that kind of stuff even belongs in the GD forum.

    Best
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  • SP45
    Thanks Al for the support. To all who responded "I know" I guess the question should have been simpler like "has anyone used a centerfire barrel on a rimfire" I am aware of the differences in land and groove dimensions. I understand about rate of twist and bullet length and weight. I reline many barrels as part of my gunsmith business. That was not what I was asking which is why I asked if anyone had any "first hand experience". I simply wanted to know if any of the gunsmiths out there had ever done this and if so how did it work.
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  • Nwcid
    Well with that info there is NO difference between a CF barrel and a RF barrel. They all start as steel blanks and are machined to whatever you want it to do.

    Again they DO make .22 LR barrels with 1:9 twist.............
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  • Geri
    Rebarreling most 22 LR actions pose no problem. Just pick the twist you want and rebarrel.
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  • sandwarrior
    SP45,

    Here's the deal, you ask about a barrel that has a larger diameter than the bullets intended. That's not gonna work. Anyone who's ever used the rimfire adaptors knows that they aren't nearly as accurate as either a .22 LR in a rimfire barrel or a CF .22 cartridge in a CF barrel. 4-5 MOA is the best you'll get.

    And, you ask about twist rates tightening up. Nwcid gave you the best answer in that you can get a RF .22LR barrel in 1-9" twist for what you are asking. Otherwise, you have two completely different weight class/length bullets....and THAT's not gonna work. If you want to start shooting 60 gr. bullets then do what Nwcid suggested. Get the RF 1-9" twist barrel.

    And FWIW, I'm not sure what Al contributed to this thread. Or what support you felt by it?
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