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Thread: Alloy mix help

  1. #1
    Boolit Mold
    Join Date
    Mar 2019
    Location
    Zuni NM
    Posts
    2

    Alloy mix help

    Hello all,
    I currently have about 70 lbs of lead alloy (12 bhn) and I am in search what to mix to get the bhn up to 15-16 for 9mm. I was thinking of buying some super hard or linotype from rotometals. What would be the best route and or mixture to hit my mark? Thanks
    It doesnt matter, Dem or Republican, we all have
    a right to defend our loved ones and ourself.

  2. #2
    Boolit Man
    Join Date
    Feb 2019
    Location
    Washington
    Posts
    75
    Try water dropping. It should get you to where you want to be.

    JM

  3. #3
    Boolit Man
    Join Date
    Feb 2019
    Location
    Washington
    Posts
    75
    If your lead is 12bhn it most likely has some antimony content. If so it will harden if dropped in water.

    Here is a good thread about water dropping that is worth reading. http://castboolits.gunloads.com/show...water-dropping

    JM

  4. #4
    Boolit Master



    cwlongshot's Avatar
    Join Date
    Jul 2012
    Location
    Central Connecticut
    Posts
    1,274
    Yup I agree. At a 12 now. Simply water drop them straight out of the mold.

    I powder coat my cast. So I have been enjoying softer bullets actoss the board with excellent results. A 12 is my target for most hand guns. It will expand at 11-122-+ yet with the PC zero fouling is left.
    My moderate rifles. Meaning under 2K fps get a targeted at 16bhn. I simply haven’t needed more. But the few times that I have all I need to do is water drop the 16 to hit near 20 bhn. (After seasoning)

    Good luck

    CW
    NRA Life member REMEMBER, FREEDOM IS NOT FREE its being paid for in BLOOD.

  5. #5
    Boolit Master
    Join Date
    Jul 2008
    Posts
    3,097
    Or air cool and run the starting load instead of max n your powder charge. Saves powder too.

  6. #6
    AKA: GRMPS Conditor22's Avatar
    Join Date
    Dec 2018
    Posts
    1,179
    I would start off by simply adding 2% more tin (pewter) size the boolit .0015 over the slugged diameter and see what happens.

    You didn't mention what gun you were going to shoot these in or if you were going to coat the boolits or lube them.

    a couple of charts




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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