setting up lee collet dies in rcbs single stage press

Discussion in 'Reloading' started by ODAVID, Feb 13, 2012.

  1. ODAVID

    ODAVID Well-Known Member

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    I would like experienced suggestions in setting up this neck collet die in my rcbs press. I am loading for 243 winchester and have recently bought these dies to try and achieve less runout.

    I have just completed FL sizing using my RCBS dies with out the Primer puch. This has resulted in .001 runout on the neck.

    Experience opinions welcome
    odavid
     
  2. ODAVID

    ODAVID Well-Known Member

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    43 views at his time and no comments??????? Is there no experience or helpful advice?????????
     

  3. boomtube

    boomtube Well-Known Member

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    I would suggest you set up the die according to the maker's instructions, it's a bit long to write it all out here, but the die doesn't care what brand of press we use.

    You sized your cases without the primer punch; do you mean without the expander ball, without the decapping pin or without the repriming punch?
     
  4. ODAVID

    ODAVID Well-Known Member

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    Thanks for the reply,

    I first used the lee universal deprimer then sized without the expander ball and without the decapping pin using the RCBS FL die adjusted to the chamber pushing the shoulder back .003.

    My concern on setting up the die is when using the RCBS press do you adjust the die to touch the shell holder then advance 1 turn or 2 turns or 2 1/2 turns. How do you know which works best???

    Thanks in advance
    ODAVID
     
  5. boomtube

    boomtube Well-Known Member

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    "How do you know which works best???"

    By experimentation.
     
  6. woods

    woods Well-Known Member

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    Well if you sized the cases with a full length die without the expander ball then your neck inside diameter will be extra small and you will have to use more pressure to seat a bullet or cram the mandrel from the Lee Collet Neck Sizer into the case mouth. Shouldn't use a full length die and then a collet die. The collet die does not create runout but will not correct it either.

    With the full length die without an expander all the neck variances are pushed to the inside of the case mouth and even though you have low runout after doing that, you may wind up with more runout after seating on the bullet.

    But since you want advice on how to adjust the collet die I will give my 2 cents, this is the way I do it and it works for me

    I adjust the lock nut all the way to the top of the threads

    [​IMG]

    this will put your press lever at the most horizontal when sizing

    [​IMG]

    The way the die is engineered is so that you try to put approximately 25 pounds of weight on the lever and having the lever at the highest position makes it easier for me. Don't put too much weight on the lever or you can pop the aluminum cap.

    If you are worried about whether you are sizing or not since you can't feel the crunching you usually feel with a cam-over die, try to insert a bullet before and after sizing and you will see that the bullet won't go in a sized neck. Of course since you have already boogered up the process by sizing with a full length die without an expander ball first, that goes out the window.
     
  7. ODAVID

    ODAVID Well-Known Member

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    THANK YOU I REMEMBER READING YOUR POSTINGS IN THE PAST , VERY HELPFUL.

    After I use the collett adjusted like you mentioned how do I adjust the die to fit my chamber and push the shoulder back.003: is that after i fire the brass in the gun chamber on the next loading with the collet die????


    I also have 500 new brass would you recommend using these only in the collet die or first use the RCBS die with the expander ball then the collet die???

    THANKS
    SO MUCH
    ODAVID
     
  8. woods

    woods Well-Known Member

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    You can't push the shoulder back with the Lee Collet, it is a NECK SIZER. To push the shoulder back you get a Redding Body Die to use in conjunction with the Lee Collet or just use your full length die and put up with the expander, increased runout and lube in the neck.

    For your new brass just use the Lee Collet to round out the neck and shoot. Then only neck size for the next 2 or 3 loadings until the case gets hard to chamber, then worry about pushing the shoulder back.

    Again, there is absolutely no reason to use both a full length die and a collet sizer one right after the other. Use one or the other
     
  9. joe0121

    joe0121 Well-Known Member

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    In My Win Mag every three firings I anneal the brass. Than run them in the FL sizer just barely touching the shoulder. I achieve this by sacrificing a piece of brass.

    I set the FL sizer in the press and run the ram to the top of the stroke. I run the FL down till it touches the ram and run it back up about four complete turns. I then run the brass into the die. you should be able to see how far down the neck it has sized. I then adjust the die down till I can see it re-sizing the neck just to the shoulder. I tighten the lock ring put the expander back on and the FL re size all the brass that wont chamber.

    I then neck size, re tumble with walnut and load from there.

    YMMV

    There are better way to accomplish the same thing but this works with my low budget equipment.