.30 Caliber/7.62


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Aaryq
December 22, 2007, 09:50 PM
Howdy, folks
There's a whole lot of .30 caliber bullets out there. What, if any bullets will fit into a 7.62x54R that aren't origionally designed for that cartridge?

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R.W.Dale
December 22, 2007, 09:53 PM
depending on your rifles bore measurements you could possibly use all of them.

Without slugging your bore though you're only guessing

dispatch55126
December 22, 2007, 10:01 PM
Most MN bores are between .310 and .311. Most .30 Cal/7.62 bullets are .308.

Tony Gable
December 22, 2007, 10:07 PM
Aaryq'
A 7.62X54R sounds to me like a Russian .308 round. A 7.62/.308 bullet will work in this cartridge. However the weight of the bullet will increase pressures to the unsafe area. I wuold say 150 grain bullet would be maximum.
The reason I say this is because the bullet lenght is directly related to the distance off the rifling and the distance into the case neck therefore affecting pressure. Rate of twist will also affect pressure. Keep this in mind when you load. I am NO EXPERT by any means. Do some more research on this. If you can find PUBLISHED DATA for the round then follow it to the letter. There is a lot more people on this and other forumrs that know a lot more about it than I do. Hope this helps.
Tony

Eric F
December 22, 2007, 10:08 PM
any .32 will work when you shoot the barrel out that far????

jonnyc
December 23, 2007, 12:01 AM
"A 7.62X54R sounds to me like a Russian .308 round. A 7.62/.308 bullet will work in this cartridge."

Uh...I don't think so, Tim.

The 7.62x51/.308 cartridge has a .308 diameter bullet. The Soviet/Russian 7.62x54R cartridge is not related in the least, and it usually has a diameter of .311-.312. The rounds, including any of their components, are not interchangeable.

R.W.Dale
December 23, 2007, 12:36 AM
The rounds, including any of their components, are not interchangeable.

UH! wrong again

Mosin bores can run anywhere from .308 to .314 on just about any of the rifles sporting a .310 or smaller bore the much more common 30 cal/.308 diameter bullets can shoot great. And of course the primers are the same as any other LR primer. You'll use much the same powders as well.

mp510
December 23, 2007, 01:25 PM
I wuold say 150 grain bullet would be maximum.


I have factory Russian hunting ammo that is loaded current production and loaded with 204 grain bullets.

Service ammunition was made in light ball around 147-150 grains (usually) and heavy ball which was loaded with bullets up to 183(ish) grains.

There is also Commercial Russian (Wolf) ammo with 200 grain FMJ bullets.

MachIVshooter
December 23, 2007, 03:01 PM
You can use any .308" bullet. Depending on the bore diameter of your mosin, accuracy may be anywhere from decent to terrible. But there is nothing unsafe about using slightly undersize slugs.

rbernie
December 23, 2007, 03:50 PM
Sierra, Hornady, Speer, and Woodleigh at a minimum make 125gr, 150gr, 174gr-180gr, and 215gr offerings in a diameter (.311 or .312) suitable for use in most Mosins. What more would you need?

goon
December 23, 2007, 04:36 PM
It depends on the Mosin.
My M-39's worked well with standard .308 - .311 bullets.
The 91/30 was loose enough that only .310 or bigger seemed to work and it just never was as accurate as the Finns.
I loaded bullets from 123 grains to 150 grains without problems. You shouldn't have any trouble with 123, 150, or 180 grain bullet availability in this caliber because the 123 grain is standard for the 7.62x39 and the others are normally loaded in the .303 british. Woodleigh makes 215 grain bullets that would probably also work but they aren't cheap. Might be necessary though depending on what you want to shoot with it.

FYI, there is some load data for this round in one of the Lee reloading manuals.

Grizzly Adams
December 24, 2007, 10:46 AM
On the milsurps that I'm not absolutely sure of the bore diameter, I slug the barrel and then mic the slug. You can't go wrong then.

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