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To turn or not to turn

Discussion in 'Handloading and Reloading' started by quest4perfection, Jan 28, 2018.

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  1. quest4perfection

    quest4perfection Member

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    When using bushing dies and any resulting bulge on the neck is below seating depth of the bullet: let's get some thoughts regarding whether you turn the bulge off from the necks...and why.
     
  2. 243winxb

    243winxb Member

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    You can not neck turn fired brass sized with a bushing die.

    The unsized part of the neck will expand to the chamber. It needs turning, as it centers the rounds in the chamber.
     
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  3. Varminterror

    Varminterror Member

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    I'm not following? Can you expand a bit?
     
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  4. Offfhand

    Offfhand Member

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    Yeah, me too....
     
  5. 243winxb

    243winxb Member

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    The bushing will not size all the way down to the shoulder like a full length die. The Redding type S bushing die needs the bushing to float some. But even with maximum bushing sizing, mine will not size to the shoulder. This leaves the bulge, the unsized part of the neck. The case wall thickness is the same (243 win cartridge)

    Turning the bulge off would make that area of the neck thinner than the rest.

    An expander should be used to expand the neck and push any irregularities to the outside , then it can be turned .
     
    Last edited: Jan 28, 2018
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  6. Blue68f100

    Blue68f100 Member

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    Beside that little expanded area helps center the bullet to the chamber. Less slop...
     
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  7. Walkalong

    Walkalong Moderator Staff Member

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    If you choose to neck turn the cases before sizing with a bushing die, after sizing you will still have a little "bulge" below where the bushing sizes.

    If you are loading for a gun with a tight necked match chamber (Such as my .262 neck 6 PPC Bench gun) you will have to neck turn so the loaded round will match the chamber.

    If you want more consistency in neck thickness all the way around you will neck turn to match the thinnest part of the neck. Don't take off any more than needed for a standard chamber. Some people say neck turn to clean up 90% of the circumference of the neck, probably works just fine.
     

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  8. Varminterror

    Varminterror Member

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    GOTCHA!! Yup, fully agree! I didn't immediately follow your sequence in my head.

    When I'm neck turning, I either FL size or use a non-bushing neck die to kiss the shoulder, giving me a tight mandrel fit, then turn the entire neck. From there on out, I may size with a bushing neck die - but any time you're turning, you have to be sure you have the full neck to uniform dia.

    Now - if you're getting a doughnut, for example, when necking up and pulling thicker shoulder brass into the neck, THEN that doughnut should get turned, but that's a different thing than the "false shoulder" type bulge around a bushing sized case neck.

    "Bulges" and "doughnuts" are different things. Turn doughnuts, not bulges. Size or ignore bulges.
     
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  9. quest4perfection

    quest4perfection Member

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    Future readers should pay attention here and make decisions based upon whether they or not they have a tight bore and where they are wanting to end up. Good information in the two previous posts but anyone new to reloading should understand what it truly means. Once you turn your brass you are obligated.
     
  10. Walkalong

    Walkalong Moderator Staff Member

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    Tight neck?
     
  11. murf

    murf Member

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    aren't doughnuts pushed to the inside when the case is sized? how would you turn the doughnut if it is on the inside of the case?

    murf
     
  12. Varminterror

    Varminterror Member

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    Pulled back out by the expander
     
  13. spitballer

    spitballer Member

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    This makes imminent sense to me, and thanks to WinXB for the post, but can anyone post a picture of one of these "expanders" and suggest a retailer? Thx in advance.
     
  14. Varminterror

    Varminterror Member

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    The expander ball/mandrel in your sizing die.
     
  15. spitballer

    spitballer Member

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    Oh okay I thought there was an "expanding" tool that us neck-sizers could use to get fresh brass squarely onto a pilot.
     
  16. Walkalong

    Walkalong Moderator Staff Member

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  17. 243winxb

    243winxb Member

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    https://www.sinclairintl.com/search/index.htm?k=Neck+turning+expander+pilot&ksubmit=y

    I see listed
    1. Nect turning mandrels
    2. Expander mandrels.

    Different diameters from what i read. .222" vs .223"

    An expander die body may be needed to hold the expander.
     
    Last edited: Jan 29, 2018
  18. Walkalong

    Walkalong Moderator Staff Member

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    Yes.

    Old style Sinclair
    Neck sizing mandrels.JPG
     
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  19. Varminterror

    Varminterror Member

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    The RCBS neck turning system reams inside before turning outside, all in the same pass.

    ETA: Not sure if I like that yet, but it’s faster on the Pro-Trim lathe than hand held with the K&N or Forster.
     
    Last edited: Jan 30, 2018
  20. quest4perfection

    quest4perfection Member

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    yes. it was late and I was tired zzzzzzzzzzzz
     
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