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magnetic ammo

Discussion in 'Handloading and Reloading' started by kestak, Aug 31, 2011.

  1. kestak

    kestak Well-Known Member

  2. heydawg

    heydawg Active Member

    Steel jacket usually because it is cheaper than copper is my guess. Tula markets its ammo as lead core "bimetal jacket" which is a nice way of saying "cheap ammo with cheap jacket".

    People have been asking me at the range now, "what brand of ammo are you shooting?" I don't know what kinds they are looking for, but I have handloads so it has not been an issue. I was told that certain brands have been causing steel pieces to bounce off the backstop.
  3. snuffy

    snuffy Well-Known Member

    They're copper plated steel jackets. Real common, of no concern, they won't damage your bore. The copper plating is plenty thick so the steel jacket never touches the rifling.
  4. Mike1234567

    Mike1234567 member

    Maybe I've misread what I've seen but what I understand about "magnetic bullets" is one of the following:

    1. There's a small amount of steel in the jacket (alloy) but it's mostly copper.


    2. There's a steel core which, in most cases, is just to save money (how I don't know).


    3. There's a steel "penetrating core/tip".

    In any case you'll need to research what you've got using the head stamp as reference. I'm sure I'll be corrected.:)
  5. cberge8

    cberge8 Well-Known Member

    Most bullets that I have looked at that attract magnets are made as follows. Lead core, inner steel jacket, outer copper jacket or plating.

    Even if the steel does contact the rifling, it would not hurt anything. All steel bullets that I have pulled to examine have a very mild steel.
  6. USSR

    USSR Well-Known Member

    Yep, "very mild steel" jacketed bullets.

  7. LightningMan

    LightningMan Well-Known Member

    I know that Russian made Tulammo ammunition will attract a magnet, but I also have a few old 9mm cartridges which also attract a magnet. These 9mm's have a head stamp of;( 51 bxn - + 7 ) I have wondered if these have either a steel core or a steel jacket. If you can go by the bullet's color which is the color of steel, then my guess is that they have a steel jacket. LM
  8. rcmodel

    rcmodel Member in memoriam

    A great deal foreign ammo, especially Russian and Chinese, and some WWII & later American GI ball ammo will have mild steel jackets with a thin copper coating.

    The reason being, a shortage of copper in Russia & Europe all the time, and in the U.S. during war time.

    If a magnet attracts the bullet, you can bet it has a steel jacket, or has a steel penetrator inside it.
    In some cases, both.

    There is no such thing as a magnetic copper jacket, magnetic gliding metal jacket, magnetic bronze jacket, etc.
    All copper based bullet jackets are non-ferrous alloys, and simply cannot be magnetic.

    If it looks like a copper colored jacket, but yet is magnetic, it is a steel jacket with a copper alloy coating.

  9. dbarnhart

    dbarnhart Well-Known Member

    The indoor range I shoot at will not allow any ammo that will attract a magnet. I believe their concern is the steel core ammo.
  10. 41

    41 Well-Known Member

    I've heard of ranges not allowing ammo that attracts magnets, why is this? Is it a penetration issue, because of the steel?
  11. rcmodel

    rcmodel Member in memoriam

    Bullet trap deflector plate damage.
    And sparks can start fires in some types of bullet trap media.


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