40 s&w dies?

40 s&w dies?

This is a discussion on 40 s&w dies? within the Reloading forums, part of the Defensive Ammunition & Ballistics category; I have a set of 40 dies a friend found and is giving me. They are not marked 10 mm on them or in the ...

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Thread: 40 s&w dies?

  1. #1
    Member Array Gunnie's Avatar
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    40 s&w dies?

    I have a set of 40 dies a friend found and is giving me. They are not marked 10 mm on them or in the packaging i would like to know if i can use these to reload for my new 10mm. similar to using 38 special in reloading 357. As brass is so hard to find for 10 mm right now i dont want to ruin any trying many thanks Gunnie


  2. #2
    VIP Member Array Rob99VMI04's Avatar
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    Yes/No. the sizing die no, the seating or crimping die yes. Actually thats not true some of the older dies no, I think the newer dies can be adjusted for both. I use to load 10mm and I'm pretty sure I used a 10mm sizing die only. I don't load 10mm anymore and haven't for 6 years, but I do load 40. I have the dillion dies and I think they can be adjusted for both. I would check the manufacturers website.
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    VIP Member Array high pockets's Avatar
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    Quote Originally Posted by Rob99VMI04 View Post
    Yes/No. the sizing die no, the seating or crimping die yes.
    Why not the sizing die, when we don't know whose dies they are?
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    I think they can as well but I'd say a call to the manufacturer would be the safest way to find out.
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  5. #5
    VIP Member Array Rob99VMI04's Avatar
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    Quote Originally Posted by high pockets View Post
    Why not the sizing die, when we don't know whose dies they are?
    Yeah i was editing my post little quick on the draw my friend.
    “Are you a thermometer or a thermostat, do you reflect or become what is happening in the room or do you change the atmosphere, reset the temperature when you come into the room”?--Chuck Swindoll

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  6. #6
    Member Array Gunnie's Avatar
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    I beleave they are LEE dies IF that helps

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    VIP Member Array dukalmighty's Avatar
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    I've reloaded 10mm with 40 S&W dies with no problem
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    Since the difference between the 40 S&W and the 10MM is a slightly longer case for the 10MM 40 S&W dies will work to load either, already done it since I have both calibers. Now if dies for the 10MM are made like some dies I bought for 357Mag they will not work, the problem with the 357 dies were they were cut the same as the chamber in a 357 revolver and could not be adjusted down far enough to seat and crimp a 38Spl. On suggestion is to check the markings on the dies, my dies are marked 38/357 and the other set is marked 40 S&W/10MM on RCBS dies.
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    OH! You scared me there for a second!
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  10. #10
    VIP Member Array Stevew's Avatar
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    My RCBS dies load both 10MM and 40 S&W and are marked as such. I would call the manufacture or check their website. I can not imagine not being able to back the 40 cal off in the press and not being able to resize a 10MM with it. Same thing for bullet seating and crimping.
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  11. #11
    VIP Member Array frankmako's Avatar
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    yes you can. most older dies are marked 40/10mm. don't know when they changed the markings on the dies.
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