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Thread: Cast bullets in K31 Swiss??

  1. #1
    Boolit Mold
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    Cast bullets in K31 Swiss??

    Hello, I am new to shooting the Swiss K31's. Have three and shot them with the factory PPU manufactured with 173 FMJ. I cast bullets for 25 years, and quit casting about 15 years ago. Now I am getting the casting fever again. Looking for help me with sharing suggestions of favorite bullet to use for the 7.5x55 Swiss. What mold manufacturer, style, weight, and sizing ? And the list goes on..... I would be glad to consider any suggestions or experiences you may have. Thank you for taking the time to read this request! John

  2. #2
    Boolit Master

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    Here is a thread to get you started. You can search for 7.5x55 and get many more.
    https://castboolits.gunloads.com/sho...ghlight=7.5x55
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  3. #3
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    The Lyman 311413 is a good bullet for a K31. The RCBS 30 cal Silhouette is also great. Watch the nose diameter and make sure the bullet chambers easily.

  4. #4
    Boolit Buddy
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    NOE makes a K31 boolit. works good.

  5. #5
    Boolit Master

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    Quote Originally Posted by TreeKiller View Post
    NOE makes a K31 boolit. works good.
    +1 Made for the application. No seating deep, no finagling, it just works.

  6. #6
    Boolit Bub



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    Is that mold still being made? I've been watching for quite a while and its always out of stock. They've ignored all 3 of my emails the last year.

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  7. #7
    Boolit Master
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    My Swiss rifles all like the Lee C312-185 RN sized .309.

    Adam

  8. #8
    Boolit Master OptimusPanda's Avatar
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    I have had some luck with the lee 312-155 sized down and seated deep enough. They worked well enough for my uses.
    It's only hubris if I'm wrong.

  9. #9
    Boolit Master Dan Cash's Avatar
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    This bullet from Accurate works very well: https://accuratemolds.com/bullet_det...bullet=31-185S
    To paraphrase Ronald Reagan, the trouble with many shooting experts is not that they're ignorant; its just that they know so much that isn't so.

  10. #10
    Boolit Master 35 Whelen's Avatar
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    I used to shoot our local High Power matches with one of my K-31's, it's very accurate.

    I started with a homely 145 gr. plain base FP and 6.7 gr. of Bullseye-



    I later switched to the bullet from the NOE mold, but I no longer see that mold on their site.

    The Lyman 311672 is supposed to be a good one for the K-31 too.
    The biggest waste of time is arguing with the fool and fanatic who doesn't care about truth or reality, but only the victory of his beliefs and illusions.
    There are people who, for all the evidence presented to them, do not have the ability to understand.

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  11. #11
    Boolit Buddy andrew375's Avatar
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    I've used the Lee 200gr with good results.
    "Consciousness is a lie your brain tells you to make you think you know what you are doing." Professor Maria Goncalves.

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  12. #12
    Boolit Bub



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    Quote Originally Posted by czgunner View Post
    Is that mold still being made? I've been watching for quite a while and its always out of stock. They've ignored all 3 of my emails the last year.

    Sent from my Pixel 3 using Tapatalk
    As an update, I called NOE and was told their production has been shut down for 7 months. The fellow I spoke to said they may be running again around the first of the year.

    Sent from my Pixel 3 using Tapatalk
    Disabled Army veteran

  13. #13
    Boolit Mold
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    lee c312-155-2r is the best bullet that i have found that works the best for me. I can keep it in the 6 inch bull at 100 yards, on a rifle rest mind you!
    Buy the 6 gang mold for casting, it's so much better than the 2 gang mold. Slug the bore, size 1 or 2 over groove diameter.

    my specifications: slug- .307
    sized- .309
    OAL- 2.770
    Touch the lands- 2.795
    power 2400 ------- 16 gr.
    rear sights set to 400 meters.
    my chronograph read fps- 1614,1549,1543,

    sized at .308 had some blow back from case leakage, failed to seal case neck fully.

  14. #14
    Boolit Grand Master

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    NOE is up and running again .
    If you want a mould , join the NOE Forum ... you can get in on a production run or , do as I did and Start a production run ... 10 or 12 sign on to the run and the moulds are made and shipped ...
    Beats sitting around waiting for a mould to appear in their inventory ...
    Seven Ways To Sunday !
    It must not be that hard to do ... I did it !
    Gary
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  15. #15
    Boolit Buddy
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    The NOE improved 315 or the Saeco 315 cast bullets do a good job in my Swiss K11. I imagine they will do fine in your K31 as well.

  16. #16
    Boolit Master
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    The PPU brass seems too be sold out at most places I have looked, and was selling at around .80cents ea. Raven Rocks Precision has Norma brass on sale now for
    $ 1 ea, free shipping with a $150 order. I don't know where else too find once fired, maybe try Duck Creek Reloading?

  17. #17
    Moderator Emeritus / Trusted loob groove dealer

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    You can form brass from .284 Winchester. If you can find it!

    I'll ask Pierre St. Marie if he has a source of brass. We talk about every day.

    From the expert;

    Pierre St. Marie
    Good morning Ric. I'm afraid that the term "reasonable" no longer enters into the conversation as pertains to 7.5 x 55 brass. Yes, 284 does work, but please note that it works perfectly 100% of the time in the G11 series rifles, But when it comes to the Kar.31, You may get one or two failures to extract once in a while. The difference is the thickness of the rim And its interaction with the two extractors on these rifles being just a bit different.
    Last edited by waksupi; 11-05-2024 at 10:44 AM.
    The solid soft lead bullet is undoubtably the best and most satisfactory expanding bullet that has ever been designed. It invariably mushrooms perfectly, and never breaks up. With the metal base that is essential for velocities of 2000 f.s. and upwards to protect the naked base, these metal-based soft lead bullets are splendid.
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  18. #18
    Boolit Master

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    Quote Originally Posted by waksupi View Post
    From the expert;

    Pierre St. Marie
    Good morning Ric. I'm afraid that the term "reasonable" no longer enters into the conversation as pertains to 7.5 x 55 brass. Yes, 284 does work, but please note that it works perfectly 100% of the time in the G11 series rifles, But when it comes to the Kar.31, You may get one or two failures to extract once in a while. The difference is the thickness of the rim And its interaction with the two extractors on these rifles being just a bit different.
    Interesting. Not really a statistical sample but my experience has been exactly the opposite: no extraction issues using brass formed from 284 in my K31 while my well-worn 96/11 has a definite preference for PPU 7.5x55.

    Bill
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    Jimmy Buffett
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  19. #19
    Boolit Buddy
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    Quote Originally Posted by c141b View Post
    lee c312-155-2r is the best bullet that i have found that works the best for me. I can keep it in the 6 inch bull at 100 yards, on a rifle rest mind you!
    Buy the 6 gang mold for casting, it's so much better than the 2 gang mold. Slug the bore, size 1 or 2 over groove diameter.

    my specifications: slug- .307
    sized- .309
    OAL- 2.770
    Touch the lands- 2.795
    power 2400 ------- 16 gr.
    rear sights set to 400 meters.
    my chronograph read fps- 1614,1549,1543,

    sized at .308 had some blow back from case leakage, failed to seal case neck fully.
    Same projectile, same OAL, same size .309, same sight setting just a different powder with similar velocity my K31 loves this lee mould

  20. #20
    Boolit Mold
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    So the question arises, where can I find once fired range brass for the 284 Win. I have no brass for 7.5mm Swiss. Its my understanding that all that is needed to convert 284 Win brass to 7.5mm Swiss , is to open up the neck enough to receive .308 cal bullets or boolits?

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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