re chambering 7.62x54r

Discussion in 'Gunsmithing Forum' started by triggerjob, Jul 1, 2012.

  1. triggerjob

    triggerjob New Member

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    Is there a standard US calibur a 7.62x54r can be rechamber too, if so what,

    If not can the chamber be sleeved to 7.62 x 54, or some other popular .30 cal
     
  2. Jpyle

    Jpyle New Member

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    At 7.62 x 51 the .308 is too short for a rechamber, I believe, and the 30-06 at 7.62 x 63 may be too long. Rechambering usually involves lengthening the chamber throat and counterboring the barrel to a higher, i.e. larger caliber. A 7.62 x 54r sleeve can be inserted but I believe the original bore needs to be worn out of spec or it obviously will not fit.

    What issues are you trying to solve? Seems like a lot of work for a Mosin.
     

  3. Durangokid

    Durangokid New Member

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    I don't know why you would spend that much on a $100 dollar rifle. The best thing to do would be to rebarrel the old Russian. This would be very expensive. The American .30 Cals. you mention are all .308 caliber. The Nagant has a .311-.312 bore. The Nagant ammo is available so why change it?:)
     
  4. trip286

    trip286 New Member

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    If rechambering a Mosin Nagant, I personally don't know anything about it, but the general consensus seems to be that it could be extremely dangerous. Supposedly, there once were many that had been rechambered to .30-06, and there is a reason why they are hard to find nowadays. Seems I heard of a problem with them breaking down. Maybe not always ka-booming, but receiver cracks and other such damage that made them unsafe to shoot.

    Like durango kid said, the ammo is cheap and available. If you want something else, then just save up your money since your shooting such a cheap rifle with cheap ammo, and get something else later on down the road.
     
  5. triggerjob

    triggerjob New Member

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    I do things just to do them, but i dont want to rip my face off by blowing up a gun. I think the 30 06 is a higher pressure catridge than the 54r, which is probly why it didnt work out. A person ought to be able to sleeve the chamber for .308 though. I was wondering if anybody had done something with these other than buy them for laughs:)
     
  6. Durangokid

    Durangokid New Member

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    To sleeve a chamber work the bolt face over and extractor and ejector you are looking at $400 bucks. You will still have a bore that is over sized . The rifle will not shoot a .308 bullet properly from a .311 bore. For $700 dollars you can find a shootable 1903A3 30-06 a real battle rifle.:)
     
  7. trip286

    trip286 New Member

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    Or for way less than that you can find a damn nice hunting rifle.
     
  8. triggerjob

    triggerjob New Member

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    So now were getting somewhere, what US catrige is .311, and lower power than a 308, 400 hundred bucks seems, a litttle steep for this, a competant machinist ought to be able to bang this out in 3 hours.

    Be creative, the .454 didnt exidt untill some guy said, i want to build a hand gun so ridiculous every gun nut will want ohe just to say they have outdone dirty hary
     
  9. triggerjob

    triggerjob New Member

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    Ok,
    You guys forced me to look it up.
    .32 acp or .32 sw are the only 2 american bullits that would work in the bore, so i guess that foils the plan.

    I suppose i could sleeve the bore for the 7.62 by 39, that would be safe and only
    Partially ridiculous. I could saw the barrel down, to 16 inchs that might be cool.
     
  10. c3shooter

    c3shooter Administrator Staff Member

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    While you are at it, rework the bolt face and the extractor, since you are going from a rimmed to a rimless case with the X39 cartridge. BTW, I think that rimmed and rimless headspace a bit differently. As said, you can put $600 ino it, and have a $90 rifle.
     
  11. hiwall

    hiwall Well-Known Member

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    I think the 32-40 and the .32 Win Spl were about .311 or .312. Are rimmed and power wise about 30-30. Barrel would have to be set back and the rims are smaller so that would be cause more work. They are shorter and slimmer so would not feed right without more work. The easiest would be a new barrel in 30-40 krag that would most likely be the least work. I'm sorry but I can see no merit in your idea at all. The only thing that rifle has going for it is the price of the gun and ammo.
     
  12. triggerjob

    triggerjob New Member

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    So i guess you guys wont be putting your orders in, in advance.
     
  13. JonM

    JonM Moderator

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    I just handload for mine. All mine are either right at moa or under 2 moa with consistant handloads. Loading your own opens a lot of doors as decent 311 rifle bullets are not hard to get.
     
  14. Durangokid

    Durangokid New Member

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    The .454 is not a new or different round. A bore and groove caliber description can be expressd in a number of terms. The .454 is a standard .45 caliber with a longer case to keep it from chambering in older firearms.:)