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Thread: Large diameter Star dies

  1. #1
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    ammohead's Avatar
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    Large diameter Star dies

    Would any of you have a Star die catalog showing the largest size die Star offered to it's customers? Magma too for that matter. I am getting requests that leave dang little meat in the lube area.

  2. #2
    Boolit Buddy
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    Greetings,

    I have a Magma die at 0.501".

    Cheers,

    Dave

  3. #3
    Boolit Master bosterr's Avatar
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    I have a .503 Magma die.

  4. #4
    Boolit Master

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    I have 2 Star San Deigo sizers with sizing dies for several calibers from .225 to .454. According to an above post Magma made sizing dies up to .503. While working with .38 Spl. & .357 Mag. and wanting to use a .3585 cast boolit, I used a split .250 steel rod (split for about 1 1/2") and made a bob of emory cloth to enlarge a .357 Star sizing die to the desired diameter. It worked great for .357 Mag. & .38 Spl. but I found that a boolit that big wouldn't work in my 9mms. Fortunately, I had an extra .357 Star sizing die that would work with 9mm. So it is possible to enlarge Star sizing dies but I do not know the limits imposed by the smaller area of the sizing die that permits the lube to get to the lube grooves on a boolit. Big Boomer

  5. #5
    Boolit Master



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    Not Star or Magma, but I have a .514 that Lathesmith made for me
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  6. #6
    Boolit Buddy
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    From Star documentation sent to customers in 1962. No specific sizes indicated.

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  7. #7
    Boolit Master



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    I have a Magma .511 die myself. Not sure how much larger you can go.

  8. #8
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    Thanks for all the response.

  9. #9
    Boolit Mold
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    I can’t recall where I saw it recently, but recall .55 as the maximum. I have seen them offered to .585 though.

  10. #10
    Boolit Buddy atfsux's Avatar
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    2 months ago when Magma held their auction, I bid on a lot of the sizing dies and got them. I'm holding the largest one in my hand right now, and is it marked .519

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  11. #11
    Boolit Master

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    Can you measure the outside diameter of the lube area vs. the inside diameter of the very bottom or exit of that sizing die? That would give us an idea of the thickness of the steel at the area where the lube holes are. Big Boomer
    Last edited by Big Boomer; 06-11-2024 at 10:55 PM. Reason: additional info

  12. #12
    Boolit Buddy atfsux's Avatar
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    Quote Originally Posted by Big Boomer View Post
    Can you measure the outside diameter of the lube area vs. the inside diameter of the very bottom or exit of that sizing die? That would give us an idea of the thickness of the steel at the area where the lube holes are. Big Boomer
    ID is .52 while OD is .70
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  13. #13
    Boolit Master

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    .018"? That's does not seem like much! But if it works, that's all it takes I guess. Thanks for the info.
    Big Boomer

  14. #14
    Boolit Grand Master



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    Quote Originally Posted by Big Boomer View Post
    .018"? That's does not seem like much! But if it works, that's all it takes I guess. Thanks for the info.
    Big Boomer
    .70" - .52" = .180" or .090" per side wall thickness over the lube hole relief.
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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