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Author Topic: homemade primers, powder and bullets  (Read 37905 times)

shaftoe

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Re: homemade primers, powder and bullets
« Reply #25 on: August 14, 2009, 03:27:31 pm »
While we're talking about something as difficult as making primers, anyone have an opinion on making your own brass?

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    g.willikers

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    Re: homemade primers, powder and bullets
    « Reply #26 on: August 14, 2009, 04:01:42 pm »
    Brass from lipstick containers?
    Rumor has it that the Israelies did just that when their country was first invented, 'cause there was an embargo on weapons and ammo against them.
    Anyone ever hear of this?
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    shaftoe

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    Re: homemade primers, powder and bullets
    « Reply #27 on: August 14, 2009, 07:29:37 pm »
    I found this general description of the process: http://accurateshooter.wordpress.com/2007/06/15/how-cartridge-brass-is-made/

    It also looks like commercial cartridge drawing equipment is available (although probably expensive).  http://www.prvipartizan.com/machines.php

    toad

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    Re: homemade primers, powder and bullets
    « Reply #28 on: September 19, 2009, 11:45:19 pm »
    Well I used to have the three volume set of the Black Books on improvised explosives and weapons.  Supposedly these were from SOF and CIA field manuals. They do have illustrations and formats that follow the FMs of yore.   
    Going by them the key ingredient for smokeless powder and a lot of explosives is nitric acid or a supply of sulphuric acid that you can use to make nitric acid.


    The tricky stuff is of course the primary explosives used for detonation.  They had some formulas for primaries that were less sensitive but that is relative.  Some of the less touchy primaries did require packing to work properly though.
    The one thing that was cool was a rig for packing primaries  into containers for improvised detonators.  IIRC you built a sturdy wall .  You had a post taller than the wall beyond the packing station.  A long wooden lever pivoted from the top of that post.  The wooden packing rod was suspended from that lever. The lever extended over the wall and you had a handle attached to the end of it.  The wall had a small view port in it that you would look through for initial alignment.  You would then get away from the view port and pull down your lever.  Hopefully nothing exciting would happen and you wouldn't have to rebuild your packing station.

    You'll notice that I didn't keep the books, I've had enough problems trying too keep my fingers and hands attached.

    only1asterisk

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    Re: homemade primers, powder and bullets
    « Reply #29 on: September 20, 2009, 05:44:29 pm »
    While we're talking about something as difficult as making primers, anyone have an opinion on making your own brass?

    Brass can be turned on a lathe if you are desperate.  It's a wasteful, time consuming process and the results are inferior to to drawn brass in many ways.

    kunkmiester

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    Re: homemade primers, powder and bullets
    « Reply #30 on: September 30, 2009, 07:39:30 pm »
    There's a process where a sheet of metal is turned on a lathe, but instead of cutting, the tool forces the metal into a different shape, a bowl, or cartridge, for example.  Can't remember what it's called.

    You could also go to a combustible plastic, that could be molded, and shaped to use a normal chamber.  You'd have to build a piezo-electric ignition system instead of the firing pin, and get used to the extra crud from the plastic and the gas from the poorer chamber seal.
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    JesseL

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    Re: homemade primers, powder and bullets
    « Reply #31 on: September 30, 2009, 07:43:28 pm »
    There's a process where a sheet of metal is turned on a lathe, but instead of cutting, the tool forces the metal into a different shape, a bowl, or cartridge, for example.  Can't remember what it's called.

    Spinning.
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    kunkmiester

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    Re: homemade primers, powder and bullets
    « Reply #32 on: October 01, 2009, 03:24:59 pm »
    Thanks, Jesse.  I'd imagine it could be done just fine on a lathe, and thus you wouldn't be wasting as much as cutting out of a block.  You'd still have to do the neck and shoulder on a rifle cartridge, but most of the forming would be pretty quick.  I'm not sure how precise spinning can be though.  Could you get the tolerances close enough for ammo?
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    JesseL

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    Re: homemade primers, powder and bullets
    « Reply #33 on: October 01, 2009, 03:29:58 pm »
    Thanks, Jesse.  I'd imagine it could be done just fine on a lathe, and thus you wouldn't be wasting as much as cutting out of a block.  You'd still have to do the neck and shoulder on a rifle cartridge, but most of the forming would be pretty quick.  I'm not sure how precise spinning can be though.  Could you get the tolerances close enough for ammo?

    You wouldn't have to get the case body all that close by spinning. One you had the base and walls of the cartridge formed you could run it through a sizing die, and then trim it and turn the neck as necessary.
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    only1asterisk

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    Re: homemade primers, powder and bullets
    « Reply #34 on: October 01, 2009, 08:26:44 pm »
    You wouldn't have to get the case body all that close by spinning. One you had the base and walls of the cartridge formed you could run it through a sizing die, and then trim it and turn the neck as necessary.

    I don't think spinning would work that well.  Before the availability of all the current BPCR brass 45-70 cases  often lengthened by spinning.  The failure rate was pretty bad and the best cases just were useful with nothing like the accuracy of properly drawn brass.

    kunkmiester

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    • The Purple One

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    Re: homemade primers, powder and bullets
    « Reply #35 on: October 02, 2009, 06:50:04 pm »
    I'm not quite making sense of that, sorry.  .45-70 cases from someone were spun?  How bad would it have to be for a sizing die to not fix it?  I was thinking that spinning might put more stress on the metal than drawing, meaning it would be best to anneal it, possibly partway through the spinning process. 
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