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Thread: Hardness for 9mm?

  1. #1
    Boolit Mold
    Join Date
    Jan 2009
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    7

    Hardness for 9mm?

    Is there any translation of the dent, scratch, mark method into a rough Brinnell hardness number? (I do not have a hardness tester)

    What hardness do you suppose I would require for 9mm 125 RN at 1000 fps? I guess I could fire em and just watch out for leading .

  2. #2
    Boolit Buddy Throwback's Avatar
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    Answer to your first question is "not really". Experience with different alloys and pure lead, which is very easy to mark with your fingernail would give you some basis for comparison but this is a matter of judgement and not pure science.

    You need not cast exceptionally hard for the nine in most cases. (You don't say what you are shooting it in) I know of some people, famous and otherwise, who like to cast the nine (and other handgun rounds) from straight linotype but this is grossly unnecessary. Use straight WW to start with and see how that works. I am guessing that you will be quite satisfied.

  3. #3
    Boolit Buddy Cloudpeak's Avatar
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    I use straight, air cooled wheel weights sized .357" in my 9's with no problem.

    Cloudpeak

  4. #4
    Boolit Mold
    Join Date
    Jan 2009
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    Thankee kindly.

    I am shooting from handguns between 2.5 and 5 inches in length (semi autos)

    I have 180 ingots from range lead, no WW. I expect to have to add tin for filling out and antimony for hardness. I am about to place an order with the Antimony man. I jes want some advice b4 i place order.

  5. #5
    Boolit Buddy Throwback's Avatar
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    Range lead should also be fine as is. A litte bit of tin may or may not be needed - but it certainly won't hurt. Antimony is not easy to play with. Do your homework.
    Last edited by Throwback; 02-24-2009 at 10:57 PM. Reason: Spelling - as usual

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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