Is there a commercially chambered 4mm rimfire??

Discussion in '.22 Rifle/Rimfire Discussion' started by MoAmmoPlease, Apr 9, 2010.

  1. MoAmmoPlease

    MoAmmoPlease New Member

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    I read a article recently concerning 8mm mausers being converted to .4mm rimfire. I'm not interested in a conversion but it seems like a slick little backyard round. Nice and quiet and there are sources for ammo.

    Has anyone heard of such a beast and if so any recommendations??
     
  2. cpttango30

    cpttango30 New Member

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    Nothing that I have ever heard of. You can get conversion for a AR-15 to convert it to a 22lr.

    converting an 8mm to a 4mm would need a barrel sleave with a chamber built into it. Not unlike some O/U shotguns. Weatherby used to make the Athena in a 12, 16, 20, 28, 410 You got the gun in 12 ga then you got the rest as barrel inserts.
     

  3. c3shooter

    c3shooter Administrator Staff Member

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    The 4mm I have seen is a subcaliber training round- and it does indeed use a sleeve thru the barrel. Have seen them for Luger pistols and 8mm rifles. The Brits had a subcaliber for (IIRC) the Martini Henry that fired a a tiny little bottleneck- want to say Morris.

    The 4mms I have appear to be rimfire, but are actually inside primed centerfire (confirmed by xray) Not aware of anyone doing a commercial version- but if you have a friend in to tool and die business, I'll bet you could make an insert that uses .177 pellets, and a #11 percussion cap (no powder)
     
  4. MoAmmoPlease

    MoAmmoPlease New Member

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    Looks like I will be sticking with .22 shorts and caps. I'm lucky my smitty can mount a scope properly god bless the ole fool but he sure won't be putting together any sleaves or such. :)

    I m curious how a sleave would fit in firmly enough to not cause probs... Do they just slide in and out easily? Just small talk buds...TY
     
  5. c3shooter

    c3shooter Administrator Staff Member

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    IIRC, the barrel liner slid in, and the muzzle end had a thread, retainer nut larger than muzzle threaded over the liner. And lets face it- the 4mm was not a powerhouse.

    They made them for Lugers, Broomhandles, some of the Astra pistols- and the Swiss K-31 rifle- among others.
     
    Last edited: Apr 10, 2010
  6. c3shooter

    c3shooter Administrator Staff Member

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    Luger setup looked like this. Note cartridges in box. 4mm.jpg