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.556 Brass Converted to 7.63X25

Discussion in 'Handloading and Reloading' started by MI2600, Jun 25, 2013.

  1. MI2600

    MI2600 Member

    Jan 7, 2012
    Western Michigan
    I was reading an article about converting .556 brass into 7.62X25 TOK. I assume that same methods could be used to make 7.63X25 (30 Mauser) since they are very similar.

    Is/has anyone done this? I'm looking for pointers
  2. Reloadron
    • Contributing Member

    Reloadron Senior Member

    Jul 6, 2012
    Cleveland, Ohio USA
    I have never done it, I did watch this video which I am sure you have watched. I would imagine it would work as well for the 7.63X25 (30 Mauser) as well as it works for the 7.62X25 Tokarev cartridge.

    I can tell you that the 5.56 NATO has a base diameter of .373" and a rim diameter of .375" while the 7.63X25 (30 Mauser) has a base diameter of .381" and a rim diameter of .390". That runs with a few cases I have laying here and measured. Now how much that will matter in a 5.56 NATO cut down cut down and run through a 30 Mauser resizing die I really don't know.

    What I would do is cut maybe 10 cases down and give it a try and see what you get looking for any signs of the cases splitting. Hopefully other members have better inputs than mine.


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