"Cavim" 308 AMMO

Discussion in 'Technical Questions & Information' started by Squeak, Oct 24, 2012.

  1. Squeak

    Squeak Member

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    A number of years ago I bought 1000 rounds of Cavim 308 ammo from a mail order house.
    I shot some of this stuff in my M1A, and it seemed to be VERY hot. So much so that I never shot any more of it because I did'nt want to punish my rifle.

    Does anybody out there know anything about Cavim ammo & is it safe to shoot without punshing the gun? Does it make sense that this might be machine gun ammo? Does a plastic recoil buffer do any good in a case like this?
    What is your opinion of recoil buffers?
  2. Jim K

    Jim K New Member

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    I had a batch of that in .308, about 300 rounds and shot it in an M1A; it seemed OK, about the same as US GI. Of course that was several years ago and I am sure was a different lot.

    I have never used a buffer in an M14 type rifle, so I can't say how well they work. The gas trap and expansion system of the M14 won't allow too much in the way of excessive pressures.

    Jim

    Jim
  3. targetacqmgt

    targetacqmgt New Member

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    Umm I just read a response on ASK.com to your question- Confirmed reports that the south american ammo leaves "hard to get rid of residue" on your weapons internal parts.

    If I did not know any better I would say the powder contains corrosive chemicals with a combination of cordite. BUT JLA would have a more definitive answer for you,
  4. Alpo

    Alpo Well-Known Member

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    The "hard to get rid of residue" is bullet sealant. Cavim uses (used?) a tar-like sealant. When there was a lot of Cavim around, it was being sold as "NOT FOR USE IN HK RIFLES". This was because the sealant residue clogged the flutes in the chambers, leading to excess pressure.

    Many years ago I bought a case of PMC 7.62 ball. Played with it a little bit.

    Went out one day with two friends.

    Friend #1 had a Mossberg bolt-action 308 rifle. After firing one round, we could not get the bolt handle up. Had to beat it up with a block of wood. Once we got the handle up, the shell ejected fine. There were no visible signs of excess pressure. He declined to shoot any more of it.

    Friend #2 had a Remington 788 in 308. Both I and friend #2 laughed at friend #3 for having that cheap crappy Mossberg. Then friend #2 shot. Bolt handle came up fine. Bolt would not move back. Using the same block of wood, we tapped on the bolt handle until it started back. Then it came back easily, the empty ejected fine. No visible signs of pressure. HE declined to shoot any more of it.

    I laughed at both of them, for having them cheap, crappy rifles, as I lifted my Steyr Model L 308 bolt action and fired. The fireball I saw in the scope blotted out the sun. Bolt handle lifted smoothly. Bolt came back, ejected empty case. No visible signs of excess pressure. I laughed some more. Ha ha ha. Cheap crappy rifles. Ha ha ha. I continued to fire. On round #3 the L/H arm of the crosshairs on my Redfield 6X scope fell off.

    I decided to not shoot any more of it either.

    Couple of years later my brother asked me if I still had that PMC ball. I told him this story, hitting strongly on how it locked up two guns and made the crosshairs fall off my Redfield scope. He said his gun would take it. So I sold it to him.

    Springfield M1A. Far as I know, he had no problems.

    My point is that the M1A is apparently a strong gun.

    Oh, and "machine gun ammo" is nonsense. All "NATO ammo" is loaded to "NATO spec". Only difference between "machine gun ammo" and "rifle ammo" is machine gun ammo is on a belt. It's all the same.
  5. targetacqmgt

    targetacqmgt New Member

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    Holy Cr@p batman!!!!!!!!!!!:eek:
  6. Jim K

    Jim K New Member

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    All note that PMC is not CAVIM.

    Jim
  7. Alpo

    Alpo Well-Known Member

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    True. Wasn't trying to imply it was. Just that I had some stuff I thought was overloaded, and my brother's M1A ate it up. Strong gun.
  8. JLA

    JLA Well-Known Member

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    Run it over a chronograph and compare the results to load data for that bullet weight. Thatll let you know if its loaded hot. Chance are its gonna be ok to shoot in your M1A, they are pretty robust rifles and can take a bit of abuse.
  9. jlloyd73

    jlloyd73 New Member

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    I picked up a bunch of that brass (like 100) at a gun show for $9. I have heard all the same stuff, but I have also heard that the brass is awesome to reload with after the initial round has been spent. I still don't have the dies to do .308, but I am looking forward to using that brass.
  10. B27

    B27 New Member

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    Milspec 7.62x51 is NOT .308 Winchester just as milspec 5.56 is not .223.
  11. targetacqmgt

    targetacqmgt New Member

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    ok fine what is the diff?? :confused:
  12. Carne Frio

    Carne Frio Member

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    Last edited: Oct 25, 2012
  13. Squeak

    Squeak Member

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    JLA: good idea about the crony. I don't have one, but my next door neighbor does - - - and also a 100 yard range to go with it!
    Gonna have to do that. Doesn't sound like it'll hurt my M1A.
    Thanks to all for info.
  14. targetacqmgt

    targetacqmgt New Member

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  15. jim brady

    jim brady Well-Known Member

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    Just a little 'chirp' from the peanut gallery. I used to shoot my M1A a whole lot, and reload my own ammo to M80 GI specs. That CAVIM brass is very hard brass - at least the lot of 300 that I had on hand. I've never had any problems with GI LC brass, but that CAVIM stuff was really bad. I ended up pitching all of it. I had several stick in the chamber on firing. Never had this happen in any of the 1000s that I've reloaded and shot useing LC brass. I could feel the difference when re-sizing it.
    Last edited: Oct 25, 2012
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