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triggerjob 07-02-2012 12:48 AM

re chambering 7.62x54r
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

Jpyle 07-02-2012 04:27 AM


Originally Posted by triggerjob (Post 855834)
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

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.

Durangokid 07-02-2012 04:42 AM

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?:)

trip286 07-02-2012 04:48 AM

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.

triggerjob 07-02-2012 05:31 AM

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:-)

Durangokid 07-02-2012 05:40 AM

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.:)

trip286 07-02-2012 05:47 AM

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

triggerjob 07-02-2012 05:54 AM

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

triggerjob 07-02-2012 06:08 AM

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.

c3shooter 07-02-2012 11:00 AM

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.

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