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Thread: 357 mag handgun load

  1. #1
    Boolit Buddy DCB's Avatar
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    357 mag handgun load

    Getting ready to roll out a couple hundred 357m loads using Hornady 158gr, SWC/Hp Knurled waxed bullets.
    BHN is 10 and load will be 12.5grs of 2400. I have never loaded any of these bullets and was wondering if 1000/1100 f/s would cause any problems, like leading?
    I shot some of these in my 38spcl. and they were good.
    any thoughts greatly appreciated THANKS
    Dave

  2. #2
    Boolit Master Thumbcocker's Avatar
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    You can always roll them in liquid alox.

    Sent from my SM-G960U using Tapatalk
    You'll go far providin' you ain't burnt alive or scalped."

    Will Geer as Bear Claw in "Jeramiah Johnson"

  3. #3
    Boolit Grand Master tazman's Avatar
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    Quote Originally Posted by Thumbcocker View Post
    You can always roll them in liquid alox.

    Sent from my SM-G960U using Tapatalk
    Good suggestion.

  4. #4
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    If it is anything like their wadcutters it is too fast and too soft. Shoot it and see but keep your Lewis Lead remover close. You can always call and see what speed the factory recommends.
    [The Montana Gianni] Front sight and squeeze

  5. #5
    Boolit Master
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    May also be to fast for the HP to work.

  6. #6
    Boolit Buddy DCB's Avatar
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    Thanks good Idea on the alox.
    Did not think the HP would be a problem.
    Ill test both and see how it goes.
    Last resort would be to melt it down and add some linotype to it and powder coat the bullets.
    The bullets are tapered from the nose to the base about .003".. didnt like that much either.

  7. #7
    Boolit Master
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    DCB,

    I shoot much .357 cast boolits made from WW and dropped from the mould into a bucket of cold water. None of my .357, .41 Magnum or .44 Magnum cast WW quenched boolits, Alox lubed have ever leaded a bore.

    Adam

  8. #8
    Boolit Grand Master Texas by God's Avatar
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    I'm using the Speer version of that bullet with 3.5 grs of Red Dot to print to the fixed sights on my M&P .38 4" revolver.
    So far so good, no leading.

    Sent from my SM-A716U using Tapatalk

  9. #9
    Boolit Master
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    Quote Originally Posted by MT Gianni View Post
    If it is anything like their wadcutters it is too fast and too soft. Shoot it and see but keep your Lewis Lead remover close. You can always call and see what speed the factory recommends.
    What Gianni said /\

  10. #10
    Boolit Master


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    I shoot 10bhn thru 38/357 all the time. I even shoot a softer speer swaged bullet in 45 colt. And yes.. those speer got alox and caranaba ( mixed ). lubed.

    You can also rooster jacket them.

  11. #11
    Boolit Grand Master


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    Quote Originally Posted by MT Gianni View Post
    If it is anything like their wadcutters it is too fast and too soft. Shoot it and see but keep your Lewis Lead remover close. You can always call and see what speed the factory recommends.
    Correct info here.

    Suggest 3.5 to 4.5 gr of Bullseye, Red Dot or any other similar burn rate powder.
    Larry Gibson

    “Deficient observation is merely a form of ignorance and responsible for the many morbid notions and foolish ideas prevailing.”
    ― Nikola Tesla

  12. #12
    Boolit Master 243winxb's Avatar
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    Look for Hornady load data for this "cowboy" Hornady 158gr, SWC/Hp Knurled waxed bullets.

    Speer runs there lswc in 357 mag over 1000 fps at maximum.

    12.5 of 2400, is worth a try. I load same with my cast.
    Last edited by 243winxb; 05-25-2022 at 10:49 PM.
    Pure lead contains no arsenic. Its been removed by law.

  13. #13
    Boolit Master
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    And I'll add that how well said bullets fit the throats is another factor. I would err on the conservative side and follow Mr. Gibson's advice.

  14. #14
    Boolit Master 243winxb's Avatar
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    357 mag 158 gr cast, best powder if Alliant 2400 is not available?

    Low pressure 357 magnum loads for 158 gr cast swc. Hodgdon.

    HS-6, 700X, CFE pistoi. CFE Pistol gives the highest velocity 1321fps, @ 28,500 PSI, at 6.6grs maximum. Starting is 5.3 grs 18,100 PSI & 1123 fps.


    I wish i bought CFE Pistol, instead of Accurate No. 9. Too late now. https://www.thehighroad.org/index.ph...action.905609/


    Starting load of No 9 blanked the WSPM, pushing primer brass into the firing pin hole (hammer nose M28-2)
    Locked up the cylinder.
    Last edited by 243winxb; 05-28-2022 at 07:51 AM. Reason: Spelling
    Pure lead contains no arsenic. Its been removed by law.

  15. #15
    Boolit Master
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    Knurled wax bullets sound like soft swaged bullets and probably not 10 BHN. These would be meant for low velocity target loads.

  16. #16
    Boolit Man
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    How about incorporating a gas check?
    "Faster than a speeding insult, more powerful than an ulterior motive, able to leap to conclusions in a single bound... it's Captain Obvious!
    "Living well is the best revenge" - George Herbert.
    "Fast is fine, but accuracy is final". - Wyatt Earp

  17. #17
    Boolit Buddy DCB's Avatar
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    Thanks. With the bullets being slightly tapered I might be able to get a gas check to work. the base measures about .355.
    The bullets BHN is around 10.4 for sure.
    The other option is to use some Alox but then I don't know if they will work with my AP bullet feeder and die. I will not know till I try.
    I may just cast a batch RN and powder coat.
    I have several powders I could use, Just wanted to use 2400
    Dave

  18. #18
    Boolit Master 243winxb's Avatar
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    Swaged bullets can be harder then you think. Has the BHN been tested?
    Pure lead contains no arsenic. Its been removed by law.

  19. #19
    Boolit Master


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    It's not the velocity which is the limiting factor, it's the pressure with cast or swaged bullets.
    Rick

  20. #20
    Boolit Buddy DCB's Avatar
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    Yeh I tested with both my testers and i get 10-11 BHN. The ST machining gives a reading of 10.4 BHN the lee as close as I can read it is about 10BHN..
    pressure will be about 28k 12.5grs of 2400. This is out of the new Lyman cast bullet reloading manual. they state the bullets are linotype.
    I think I just realized my error. according to the calculator, Lynotype bullets have a BHN of 19
    Last edited by DCB; 05-28-2022 at 09:33 AM.

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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