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.17HMR work safely in actions/barrels chambered for .22WMR?

Discussion in 'General Gun Discussions' started by grimjaw, May 13, 2005.

  1. grimjaw

    grimjaw Well-Known Member

    Forgive my ignorance on this topic, I'm just getting back into shooting sports after many years away.

    I've been going back and forth between getting a single shot or bolt action chambered for .17 HMR or .22 WMR. I initially thought they were mutually exclusive, but an article by Chuck Hawks suggests that for rifles chambered .22 WMR, the .17 HMR should work . . .
    Original article: http://www.chuckhawks.com/17HMR.htm

    I am trying to find additional info about this, but so far no luck. It would be great if I could get a single shot .22 WMR that could also fire .17 HMR. I wasn't trying to start an argument on the merits or shortcomings of actions or cartridges. Couldn't find a more appropriate forum than this one, as cartridges of these types are made for both hand guns and long guns.

  2. foghornl

    foghornl Well-Known Member

    Way too much difference [approx .05"] in bullet sizing for any sort of velocity and accuracy.

    The round is made so that a whole new design in magazines and actions is not required. Same reason that .308 sized bullets do not shoot well in .311-.312 sized bores, although the diameter diiference is much greater in the .17 vs. 22 sized bores.
  3. jsalcedo

    jsalcedo Well-Known Member

    Having fired a .355 bullet in a .357 mag......

    I know all you would get is a pop, unburned powder and crappy ballistics.
  4. Firethorn

    Firethorn Well-Known Member

    Foghorn has it. A new chamber/barrel would be required. While the required modifications for a manufacturer is minimal, they're on the substantial side for aftermarket modification.

    It's just nice that a new magazine/action doesn't have to be designed.
    Last edited: May 13, 2005
  5. grimjaw

    grimjaw Well-Known Member

    That makes sense to me. Thanks for the explanation.

    Just have to buy two guns instead of one, oh poor me. ;)

    Luckily single shot rifles in either caliber can be had for dirt cheap. Ain't it cool?

  6. Vern Humphrey

    Vern Humphrey Well-Known Member

    There are switch barrel guns on the market -- you can get a Thompson-Center or an H&R with interchangeable .22 Mag and .17 HMR barrels.
  7. hksw

    hksw Well-Known Member

    IMO, if you go with a .17HMR first, you'll forget about getting the .22mag.
  8. grimjaw

    grimjaw Well-Known Member

    We'll see if the rain lets up tomorrow and I get scope rings that actually FIT.

    link to image

    New England Firearms Sportster, 22" heavy barrel in .17 HMR. Only complaint I have so far is that it's not balanced well b/c of the synthetic stock and extra heavy barrel. The gun weighs 7 lbs, but the weight isn't really a bother. It's short. The trigger, wonder of wonders, isn't that bad! ;)

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