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Thread: Add copper to your alloy for tougher CBs.

  1. #221
    Boolit Master Good Cheer's Avatar
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    Lead pipe can give you some funny stuff.
    Click image for larger version. 

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  2. #222
    Boolit Master Good Cheer's Avatar
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    So far my copper experience is pretty limited, just working with a couple of spools of #2 babbitt wire. Still learning and will enjoy reading back through the thread. Thanks to all.

  3. #223
    Boolit Master Oklahoma Rebel's Avatar
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    good cheer, just what the heck is that?
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  4. #224
    Boolit Master
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    calcium.
    it's all an educated guess,,,, till the trigger is pulled.

    this opinion brought to you by mister low-tech solution..

  5. #225
    Boolit Master Oklahoma Rebel's Avatar
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    oh, duh... now that you point it out to me, it should have been obvious, but I've never heard of it recrystallizing like that. interesting
    Norinco SKS
    mosin nagant est 1937
    S&W 15-2 combat masterpiece
    Remington 597 22lr w/30 rnd clip
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  6. #226
    Boolit Master
    runfiverun's Avatar
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    oh yeah, you should see inside my water heater.
    bonus is my pipes never leak.
    it's all an educated guess,,,, till the trigger is pulled.

    this opinion brought to you by mister low-tech solution..

  7. #227
    Boolit Man
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    I've been through both of these threads on Cu alloys and had a thought.

    Could you take soft lead, add brass case trimming shavings, remove the zinc, then add linotype? It would solve a number of issues, with Sn not being removed from the alloy with the Zn, and still add Sb and Sn in a known alloy that adds hardness with the Cu/Pb?

    I realize this is a gross simplification, but seems to solve most of the issues. The only open question would be ratios.......

  8. #228
    Boolit Master
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    I ain't tried brass [thought about it]
    but initial testing was done with a higher tin solution alloy and tinned speaker wire cut into small pieces.
    it's all an educated guess,,,, till the trigger is pulled.

    this opinion brought to you by mister low-tech solution..

  9. #229
    Boolit Master Oklahoma Rebel's Avatar
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    the problem would be the high melting point of brass I think, even copper wont mix unless it is tinned or it iss in the form of copper sulfide, like Zepps is
    Norinco SKS
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    Remington 597 22lr w/30 rnd clip
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  10. #230
    Boolit Master Oklahoma Rebel's Avatar
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    I have noticed that copper laced boolits have a harder, slicker "skin" to them, even if the BHN itself isn't very high, mine are around 13.5 for example. has anyone else noticed this? and do you think that it helps with ballistics, wether it be pressure-wise or accuracy?
    Norinco SKS
    mosin nagant est 1937
    S&W 15-2 combat masterpiece
    Remington 597 22lr w/30 rnd clip
    12ga NEF single shot
    heritage 22lr/22mag

  11. #231
    Boolit Man
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    Someone on one of these threads added brass case trimmings and said they were successful.

    I'm looking for cheap, easy, and successful.

  12. #232
    Boolit Master Oklahoma Rebel's Avatar
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    a 2lb bottle of Zepps is only like 11.99-12.99 at home depo, aand that goes a long way. it is 25% copper, so you can figure out easily how much you want/ need in relation to the zinc and what you want your finished cu % to be
    Norinco SKS
    mosin nagant est 1937
    S&W 15-2 combat masterpiece
    Remington 597 22lr w/30 rnd clip
    12ga NEF single shot
    heritage 22lr/22mag

  13. #233
    Boolit Master
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    NOTE: Eutectic Lead-Tin Solder at ~63% Tin Will Disolve some Copper at SOLDERING temperatures. In Electronics Industry we went to a Semi eutectic Alloy Containing Silver to stop the removal of Copper Fine Line Traces on Modern Design Circuit Boards.

    Best Regards,
    Chev. William

  14. #234
    Boolit Master Oklahoma Rebel's Avatar
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    so, for a 3sb/3sn/.25-.35%cu alloy, what do you think would be the best choice for hollowpoint pins, short and fat, long and skinny, or other? I was thinking a hp shaped like a martini glass would work good ( short sect. of wide opening, then a longer "stem" of maybe .10 dia ending in a rounded point), if you can picture what I mean? and do you think this alloy should be heat treated or quenched for 2100fps?
    Norinco SKS
    mosin nagant est 1937
    S&W 15-2 combat masterpiece
    Remington 597 22lr w/30 rnd clip
    12ga NEF single shot
    heritage 22lr/22mag

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check