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Thread: Super Heavies in the 357 Max

  1. #41
    Boolit Master
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    Quote Originally Posted by Moleman- View Post
    I need to start casting again before it warms up and I've got nothing to shoot.
    Not only that, but Winchester is counting on you to develop their new heavy bullet hunting load.......

  2. #42
    Boolit Master Moleman-'s Avatar
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    I saw this pic leaked online. Looks like they went with someone elses design this time
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    350 Legend, imitation is the highest form of flattery. Aww, Thanks Winchester!

  3. #43
    Boolit Master
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    Quote Originally Posted by Moleman- View Post
    I saw this pic leaked online. Looks like they went with someone elses design this time
    Ahh, yes. The Extreme Penetration Projectile. I heard that they gave up on that due to poor accuracy.

    Anyway, today I put a few 35-200 bullets in my milling machine and made the meplat about .280". As pictured, original bullet weighs 219.5gr and milled bullet is 210.0gr. I'm going to load them with 17gr of Lil'Gun and see how they compare. It's windy with gusts to 50 mph, so I won't be able to shoot today.


  4. #44
    Boolit Master Moleman-'s Avatar
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    We're getting the same storm. Has to be pretty windy for snow to blow into my barn from under the overhang, but it'd currently snowing on my Sheldon lathe Got a tarp on it now and the diesel generator on the charger waiting for the power to go out.
    350 Legend, imitation is the highest form of flattery. Aww, Thanks Winchester!

  5. #45
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    It's just wind here, but I've had a few shingles blow off my house. Guess I'll work on that tomorrow...

  6. #46
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    Will have to try the Hodgdon "BLK" powder as I use 680 with the 35-200 (mine comes close to 220gr) for around 2000fps. 2400 works better with the same boolit @2300fps. Heaviest boolit I have used is the 260gr "hammer", over 680, for 1930fps

  7. #47
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    How heavy do you want to go? Left to right were all swaged in BT Snipers Dies:
    240gr Swaged from 9mm Brass
    260gr Swaged from 9mm Magnum Brass
    280gr Swaged and Powdercoated (Smokes John Deere Green)
    290gr Swaged and Powdercoated (Smokes Clear)
    310gr Swaged and Powdercoated (Smokes John Deere Green)
    310gr Swaged and Powdercoated (Smokes John Deere Green)

    I shoot them through 357 Maximum 1-10 twist MGM barrels. 10" barrel for suppressed and 16" barrel for velocity. I found the faster twist is necessary with the heavier boolits.

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    Edited to add 300gr 357 Maximum loaded long. 38 Special next to them for comparison.
    Last edited by Meatpuppet; 03-01-2019 at 10:23 PM.
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  8. #48
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    I loaded and shot three of the 230gr bullets today. I powder coated them and seated them in 357 Max brass. I loaded them with 16.5 grs of Lil'gun and a CCI small rifle primer. I intended to use the 15.5 gr load that Moleman ran for this bullet, but instead of checking this thread, I was sure that I was remembering correctly and loaded up 16.5 grains. Shame on me for not double checking.



    Anyway, nothing bad happened, primers looked fine, and it put three into 1.4" at 100 yards. For my converted shotgun I think I'm pushing my luck and have decided to dial it back to milder loads and lighter bullets.

    Maybe some of you with a strong rifle might find this useful.

    Moleman - Would you be willing to run this through Quickload with 16.5 gr of Lil'Gun? Thanks.


  9. #49
    Boolit Master Moleman-'s Avatar
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    KLR, are you using the same 2.0" col or 2.1"? I ran it both ways.

    2.0" col, 360-230fn NOE, 16.5gr Lilgun 18" barrel....39,116 psi, 1640 fps.

    2.1" col """""""""""""""""""""""""""""""""""""""""""""..... 30,293 psi, 1579 fps.

    Ran the same with 2400,

    2.0" col, 13.0gr...35,868 psi, 1507 fps

    2.1", col 14.0gr....35,081 psi, 1546 fps.

    Are you using a SB1 frame with the large firing pin or some other type of single shot shotgun? I've got a very old eastern arms 12ga that I've thought about making a 357Max on after putting a smaller dia niedner type firing pin in it. I'd have to make or find a new stock is the only thing holding stopping me.
    350 Legend, imitation is the highest form of flattery. Aww, Thanks Winchester!

  10. #50
    Boolit Master
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    Moleman - Thanks! I'm using a 2.0" col. I'm using a Pardus (Turkish Folder) 12 ga shotgun. Here is my build thread:

    http://castboolits.gunloads.com/show...-ga-to-357-Mag

    The problem I'm running into is that the hammer just isn't hitting hard enough to set off rifle primers consistently. Increasing the hammer spring strength increases trigger pull too so I'm going to have to be happy with pistol loads.

  11. #51
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    cwlongshot's Avatar
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    Try a Federal Primer. They are softer.

    If using a SRMag or Match primer switch to and try a std SR primer.

    CW
    NRA Life member NRA Certified Pistol & Shotgun Instructor NRA Certified Rifle Coach Certified Range Officer Reloading Instructor
    REMEMBER, FREEDOM IS NOT FREE

  12. #52
    Boolit Master
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    I'm using a CCI 400 SR. If my latest "fix" doesn't work I'll find some of those Federals.

  13. #53
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    Quote Originally Posted by Moleman- View Post
    2.0" col, 360-230fn NOE, 16.5gr Lilgun 18" barrel....39,116 psi, 1640 fps.
    I had one of these rounds left and just now shot it over the chrono. It was 1664 fps. 18.5" barrel.

  14. #54
    Boolit Master Moleman-'s Avatar
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    That's pretty close. If you figure if there's no free lunch, you can adjust the case water capacity to 33.0gr so the FPS matches the chrony which bumps your pressure up to about 42,126 psi. The bolt thrust is less than a 12ga and you've put a smaller dia firing pin in it. I wouldn't go higher though on the outside change you pierce a primer.
    350 Legend, imitation is the highest form of flattery. Aww, Thanks Winchester!

  15. #55
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    Thanks for running that. Sounds like I'm at the upper limit of a safe load. I'm going to go back down to a lighter bullet and lower pressure since I'm dealing with an unknown Turkish shotgun.

    But those with a strong rifle might find this info useful. I'll bet that 230gr bullet would be a good deer bullet at any distance you could hit it with.

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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