Will Lee Rifle Dies Work on a 550B?

Discussion in 'Ammunition & Reloading' started by Fred_G, Sep 5, 2020.

  1. Fred_G

    Fred_G Well-Known Member

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    I just load for handguns, but found a Lee die set used in 300 Blackout. Plan on an AR build in this caliber in the future, thought I would get the dies if they work. Google is a bit unclear...
     
  2. Gatoragn

    Gatoragn Well-Known Member Supporter

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    The Dillon tool head will accept other brands of dies.

    I know lots of Dillon users prefer the Lee factory crimp die.
     

  3. G66enigma

    G66enigma Well-Known Member Supporter

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    Here's a discussion over on GlockTalk, from a couple years ago: click. Consensus in that discussion seems to be that yes the Lee dies will work in a 550B press.
     
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  4. Fred_G

    Fred_G Well-Known Member

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    Thanks! I bought a lightly used 300 blackout Lee die set. Don't have the gun yet, but with all the crazy, why not get the reloading stuff. AR build in the future...
     
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  5. locutus

    locutus Well-Known Member Supporter

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    They will work.

    But you may need to put the die lock ring under the tool head rather than on top.
     
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  6. Gatoragn

    Gatoragn Well-Known Member Supporter

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    I have heard of that work around.
     
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  7. OldManMontgomery

    OldManMontgomery Active Member

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    Almost all reloading presses and dies (U. S. Market) are built to use 7/8 x 14 thread. There are a minor number of exceptions, but they are usually identified as non-standard.
    So usually all makers of dies will fit into all maker's presses.

    Some antique or obsolete presses use different sized threads on dies.
     
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  8. Mowgli Terry

    Mowgli Terry Active Member

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    Lee dies work very well on my 550 for 357 SIG. I do use a Dillon crimp die. All my preferences aside, Lee dies work very well period.
     
    Last edited: Sep 21, 2020
  9. noylj

    noylj Member

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    I actually prefer some Lee dies and they all fit on my 1050 toolhead with ease.
    Crimp die? Any taper crimp die works as well as any other. Roll crimp dies I rate as:
    #1: Redding Profile Crimp die
    #2: Lee FCD with carbide ring removed
    #3: all the rest.