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Thread: Brass resizing advice

  1. #11
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    Quote Originally Posted by PracticalRifleman View Post
    For case neck sizing, do NOT use an expander ball in any situation.
    I agree. If it's worth reloading, it's worth doing it right.
    "You people have too much time on your hands." - scottryan

  2. #12
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    And how many here have tested a Forster full length die with a expander vs using a expander die or a Lee Collet die for neck runout.

    I have tested all three methods and prefer using Forster full length dies with their high mounted floating expander. And just because you use a expander die doesn't mean the case neck will have less neck runout than using a Forster die.

    Below the Forster die with its high mounted floating expander. The case neck is held and centered in the neck of the die when the expander enters the case neck.



    Below I installed a Forster expander and spindle assembly on my Redding .243 die and reduced neck runout. Many people forget to lube the inside of the case neck and polish the expander.



    Below a closeup macro photo of a RCBS expander, and I would never use a expander like this until it was polished smooth.


  3. #13
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    Quote Originally Posted by TxRaptor View Post
    Doing some research, it seems some like to use dry mica on the case mouth to smooth out the expander being pulled through.
    Do this to start. I have the exact same die set that you're using. I use a case neck brush sprinkled with dry mica to help the expander ball go through the neck with very little force. Try this and see if it works. I've loaded tons of cartridges and am very happy with the results. If you find that you're not happy with the results, then move on to something more involved.

  4. #14
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    Quote Originally Posted by Bret View Post
    Do this to start. I have the exact same die set that you're using. I use a case neck brush sprinkled with dry mica to help the expander ball go through the neck with very little force. Try this and see if it works. I've loaded tons of cartridges and am very happy with the results. If you find that you're not happy with the results, then move on to something more involved.
    On 5.56 I use One Shot spray lube (if you use it correctly, it WILL work every time). I make sure a little gets sprayed inside the case necks, and I've never had a problem with either sizing or expanding, using a plain old RCBS set.

  5. #15
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    I apply Imperial dry case mouth lube before applying Hornady Unique case lube to the body. It takes a little bit longer than using spray on lube, but I see better results with my bolt action reloads. If I find the expander ball dragging too much on the return stroke, I increase the amount of dry case mouth lube applied.

    I segregate brass for bolt action reloads and neck size brass after the first firing. I only full length resize if the brass is not concentric.
    Last edited by T2C; 05-21-20 at 14:01.
    Train 2 Win

  6. #16
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    On 5.56 I use One Shot spray lube (if you use it correctly, it WILL work every time). I make sure a little gets sprayed inside the case necks, and I've never had a problem with either sizing or expanding, using a plain old RCBS set.
    This is me as well. Been doing it that way for 40 years.
    Last edited by Delta-3; 05-22-20 at 00:57.

  7. #17
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    Quote Originally Posted by Uni-Vibe View Post
    On 5.56 I use One Shot spray lube (if you use it correctly, it WILL work every time). I make sure a little gets sprayed inside the case necks, and I've never had a problem with either sizing or expanding, using a plain old RCBS set.
    What kind of runout do you get? What kind of ES/SD?


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