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Thread: Another 300blackout question

  1. #1
    Boolit Mold Iron369's Avatar
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    Jul 2017
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    Louisville KY
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    Another 300blackout question

    I searched and couldnít find just what I was looking for so here it is...
    Iíve been casting for subsonic 300 blackout with straight wwís and pcing them. Thing is, I have a couple hundred lbs of pure lead. What ratio is gonna give me a useable hardness for my needs? I donít have a lot of free time to experiment. If thereís a resource I donít know about, feel free to share it with me.

  2. #2
    Boolit Master

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    There is an alloy calculator in the stickies, designed by a member, that is free to download.

  3. #3
    Boolit Master mattw's Avatar
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    Oct 2014
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    Yes, use the alloy calculator... it works well! I find that my 94/3/3 works very well in most guns at less than 2200FPS. I am now working with PC on that alloy and suspect that it will at least push that hard in the 30/06 with 150 to 185 grain bullets.

  4. #4
    Boolit Mold
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    Jul 2015
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    TN
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    Iíve cast Lee 230 grain subsonics out of 94/3/3, and they work beautifully. I mixed 5 pounds each COWW/SOWW with about 1/3 pound of pewter. Water dropped, theyíre at least 18 BHN.

  5. #5
    Boolit Buddy
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    From what I have learned on this sight, a 50/50 mix water dropped should work for subsonic and most supers.

  6. #6
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    Handloader109's Avatar
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    200 pounds, 2-4%? Sounds like I'd buy about 10 pounds of pewter or linotype and go with that. Subsonic I've been using Range lead for almost everything, drop a piece or two of what appears to be linotype in my pot. Nothing exact, just keeps it filling out the molds well. If it starts to not, I drop another piece.

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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