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Thread: Neck Turning Sinclair Style?

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  1. #1
    Join Date
    Apr 2017
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    Ames, Iowa
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    465

    Neck Turning Sinclair Style?

    Just got some items for Sinclair neck turning. For now I'll be sticking to .25-06 and 6.5-06 cases. To set up the die with an expander mandrel I assume to run a case all the way to the top of the press stroke and screw the die[sans mandrel] down until it contacts the case mouth and back off a turn or 2.

    With the NT-1000 turner is there a preferred setting of the mandrel as a stop so that all cases get turned the same? Like the shoulder on the mandrel being flush with the inner surface of the turner body? Or as I expect, some trial and error rules the day? I'll be setting up the unit with some junk cases.

    With .256 or .263 neck expansion, would you resize to a smaller neck diameter for hunting type loads or just use as is?

  2. #2
    Join Date
    Jul 2007
    Location
    Fort Worth Texas
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    1,537
    Well, the case mouth will sit against the shoulder of the mandrel and the mandrel will be moved in or out to determine how far along the neck you cut. Consensus is to just cut barely into the neck/shoulder junction

  3. #3
    Join Date
    Dec 2017
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    585
    for hunting rifles i would shoot for about a 50% contact/cut.
    under size, size with their expander, turn on their turning mandrel
    2 or 3 thous is plenty of neck tension, recoil and bullet weight is the issue

  4. #4
    Join Date
    Apr 2017
    Location
    Ames, Iowa
    Posts
    465
    Is it preferred to hold the case and turn the cutter or hold the cutter and turn the case? Prolly don't really matter I'd posit. So far so good. Probly order another cutter and have one for each caliber. FWIW I'll be loading 6.5-06 hunting loads into nickel plated cases just to make it easier to distinguish from .25-06 loads.

  5. #5
    Join Date
    Dec 2017
    Posts
    585
    i think you will have issues with nickle plated brass.
    hard brittle
    hopefully others well jump in
    Quote Originally Posted by antelopedundee View Post
    Is it preferred to hold the case and turn the cutter or hold the cutter and turn the case? Prolly don't really matter I'd posit. So far so good. Probly order another cutter and have one for each caliber. FWIW I'll be loading 6.5-06 hunting loads into nickel plated cases just to make it easier to distinguish from .25-06 loads.

  6. #6
    Join Date
    Apr 2017
    Location
    Ames, Iowa
    Posts
    465
    Quote Originally Posted by retired View Post
    i think you will have issues with nickle plated brass.
    hard brittle
    hopefully others well jump in
    I wasn't planning to turn the nickel plated stuff. Hopefully it will still shoot decent. If not, it stays home. They say that nickel plated cases will end up wreaking havoc on sizing dies. I assume the nickel flakes being harder than the die surface will eventually abrade them.

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