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  • Sandman91364
    Junior Member
    • Sep 2010
    • 9

    SVT-40 Bore Diameter

    I have a 1942 SVT-40 Tokarev rifle. I can't seem to develop an accurate load for it. It may be that the bore is slightly pitted, but the rifling is still very strong. I have heard that, like Nagants, the bore on these rifles are generally closer to .311 than to .308. I don't want to slug the bore because I'm afraid that the pitting might cause the slug to get stuck (this nightmare happened to me on an M1917 that I had to get a gunsmith to remove). I'd like to try a jacketed .311 bullet without slugging the bore first. Am I playing with fire?
  • #2
    Noonanda
    Veteran Member
    • Oct 2005
    • 3404

    what are you using to slug it? a 12 gauge double aught bluckshot pellet will work perfect, you can even use the cleaning rod from your SVT and a rubber mallet to push it through.

    as far as .311 bullets that is nominal bore diameter, should be no problems, surplus is usually .310-.311 as well. Not playing with fire at all
    "You see in this world theres two kinds of people my friend. Those with loaded guns, and those who dig... You Dig" Blondie from TGBU

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    • #3
      eaglemike
      CGN/CGSSA Contributor - Lifetime
      CGN Contributor - Lifetime
      • Jan 2008
      • 3874

      Lead bullet waaay better to use than a jacketed bullet. As noted you might even try a 00 pellet.
      There are some people that it's just not worth engaging.

      It's a muzzle BRAKE, not a muzzle break. Or is your muzzle tired?

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      • #4
        slappomatt
        Senior Member
        • Nov 2008
        • 668

        I think the OP is talking about actually "shooting" a jacketed .311 bullet before physically checking the bore diameter by slugging it.
        My Current AR15 Config.

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        • #5
          straykiller
          Veteran Member
          • Feb 2010
          • 2573

          Originally posted by Sandman91364
          I have a 1942 SVT-40 Tokarev rifle. I can't seem to develop an accurate load for it. It may be that the bore is slightly pitted, but the rifling is still very strong. I have heard that, like Nagants, the bore on these rifles are generally closer to .311 than to .308. I don't want to slug the bore because I'm afraid that the pitting might cause the slug to get stuck (this nightmare happened to me on an M1917 that I had to get a gunsmith to remove). I'd like to try a jacketed .311 bullet without slugging the bore first. Am I playing with fire?
          have a question for you Sandman, you ever get blown primers and stuck casing in your chamber, ever since i bought my svt- 40 ive been having problems the case gets stuck in the chamber and the extractor rips the rim of the case off and , also have quite a few blown primers. maybe its the old surplus ammo i got with the rifle , i haven't tried any brown bear or anything like that, dont mean to thread jack i just need to ask someone who owns an svt-40 also. thanks


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          • #6
            Noonanda
            Veteran Member
            • Oct 2005
            • 3404

            Originally posted by straykiller
            have a question for you Sandman, you ever get blown primers and stuck casing in your chamber, ever since i bought my svt- 40 ive been having problems the case gets stuck in the chamber and the extractor rips the rim of the case off and , also have quite a few blown primers. maybe its the old surplus ammo i got with the rifle , i haven't tried any brown bear or anything like that, dont mean to thread jack i just need to ask someone who owns an svt-40 also. thanks
            what surplus are you using? Also what is your gas setting at? Does it do this every round or once in a while?
            "You see in this world theres two kinds of people my friend. Those with loaded guns, and those who dig... You Dig" Blondie from TGBU

            Comment

            • #7
              Fate
              Calguns Addict
              • Apr 2006
              • 9545

              Re: Cases getting stuck in chamber problem...

              SVTs have fluted chambers designed to extract easier. However if these grooves get gunked up, you can have extraction issues. Clean your chamber really well. Might need a dental pick or similar to laboriously get the crud out.
              sigpic "On bended knee is no way to be free." - Eddie Vedder, "Guaranteed"

              "Let your gun therefore be the constant companion of your walks." -Thomas Jefferson
              , in a letter to his nephew Peter Carr dated August 19, 1785

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              • #8
                caldude
                Senior Member
                • Oct 2007
                • 1253

                7.62x54R uses a .312 dia bullet (according to Wikipedia), so any rifle using that round should have a larger bore. So a .308 bullet won't give you good accuracy as you've found. I think you'd be safe trying the .311 bullet.

                Comment

                • #9
                  Noonanda
                  Veteran Member
                  • Oct 2005
                  • 3404

                  Originally posted by caldude
                  7.62x54R uses a .312 dia bullet (according to Wikipedia), so any rifle using that round should have a larger bore. So a .308 bullet won't give you good accuracy as you've found. I think you'd be safe trying the .311 bullet.
                  dont believe everything on Wiikipedia. they were designed with a .310-311 bore, but wear can push em over. As far as using .308 bullets in a .310-.311 bore, dont count it out till you have tried it. Some rifles will still do well with .308 bullets, Ive got a M-38 that loves .308 bullets.
                  "You see in this world theres two kinds of people my friend. Those with loaded guns, and those who dig... You Dig" Blondie from TGBU

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                  • #10
                    rojocorsa
                    Calguns Addict
                    • Oct 2008
                    • 9139

                    All these Russian and European guns usually work with a .31 caliber bullet. The .308 size, not so much...

                    I say European because that's what I heard. Also, my 7.62x54R PPU bullets fit perfectly in the muzzle of my Savage No.4 Mk.1*. Furthermore, according to Wiki, the actual diameter of .303 Brit is .311". So it makes sense.


                    In short: American .30 caliber = .308"

                    European .30 caliber = .311"
                    sigpic
                    7-6-2 FTMFW!

                    "...and an old German guy said there was a bit of an unsaid joke about the Nazi salute; apparently when they clicked their heels and raised their arm up in the air in a Nazi salute, they were saying, "we're in this much s___."

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                    • #11
                      Full Clip
                      I need a LIFE!!
                      • Dec 2006
                      • 10260

                      I use Hornaday .311 150grn SST bullets for my SVT-40 and PSL...

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