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Thread: What does "boxer primed" mean?

  1. #1
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    What does "boxer primed" mean?

    I see mostly ammo that says it is "boxer primed", what does that mean? Should I be looking for wrestler primed or mixed martial artist primed
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    Boxer primed == reloadable.

    as opposed to Berdan primed, which are basically not. (Oh, I know they can be, technically, with special primers and a special tool to pry out the old, yadda yadda yadda.)

    See Wikipedia on internal ballistics.
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    The boxer type priming system is named after the man who developed it, Edward Boxer. Similarly the berdan type priming system is name after Hiram Berdan.
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    Boxer primed cases have one central hole for the primer flash, Berdan primed cases have two flash holes side by side. The former are what we are used to seeing and we reload them with our standard dies. The Berdan is more common in Europe and present problems when trying to deprime them due to the two offest flash holes.
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    Boxer primed is the US standard for ammo and brass. It has a single hole in the base of the brass to ignite the powder charge. The anvil is located in the primer itself. Berdan is the european style of priming. You need special tools to deprime the brass after it has been fired. It usually has two small hole on opposite sides of the anvil that is in the base of the brass. Berdan primers is more expensive than the Boxer primers and harder to find. You can find the boxer primers at most gun shops and larger sporting goods stores. Berdan primers are a speciality item that usually has to be ordered from a select few distributors.

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    Boxer primed is the US standard for ammo and brass. Berdan is the european style of priming.
    Perhaps of interest is the factoid that Boxer primers were developed by a European and Berdan primers were developed by an American, yet the common usage is inverted.

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    berdan/boxer

    I have the RCBS berdan deprimer.works good on some pain in the neck on others.I only use it when trying to get some ammo when theres no other way.

  8. #8
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    I reload berdan ammo that I can't make or find boxer brass for.

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    "...Berdan is more common in Europe..." Not anymore.
    "...I know they can be..." More trouble than it's worth. There aren't many cartridges that aren't available with boxer priming these days. Berdan primers are not the same diameter as boxers. There's no large and small rifle or pistol berdan primers. Berdans have a number and it has to be the right one to fit a particular case. And it isn't safe to try and convert a berdan primed case to boxer either.

  10. #10
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    Berdan to Boxer

    Not to steal the thread but to expound upon it. Are Berdan and Boxer primer pockets the same size? If so can the Berdan cases be drilled to accept Boxer primers or if not can Berdan primers be bought in the States and installed into the converted cases?

    Missed the above post. Why is it unsafe to convert Berdan primed cases?
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    And it isn't safe to try and convert a berdan primed case to boxer either.
    It is not so much a safety issue as an amount of labor issue.

    I have done it for a few shells in old calibers that could not be obtained boxer primed.

    It is a mess and very time consuming.
    Heat cannot be used in the process or the case head can get softened.

    Tiny brass rings to shim diameters and a lot of exacting work.

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    Boxer and Berdan:

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