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trimming neck too short: implications?

Discussion in 'Handloading and Reloading' started by twofifty, Jan 27, 2013.

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  1. twofifty

    twofifty Member

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    I've trimmed one bottleneck rifle case 8 thou shorter than the manual's
    1.902" trim-to length. This case is on it's fourth reload; the neck sized properly and will tightly hold/retain a bullet at its seated depth.

    Wondering if there likely is enough neck length left to assure full obturation of gases/pressure?

    Sure I could turf it, but the obturation question would remain.
     
  2. Walkalong

    Walkalong Moderator

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    You'll be fine, and it will stretch to length soon enough.
     
  3. hovercat

    hovercat Member

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    Just keep the overall length when loaded with bullet. Now, if the cartridge headspaces on the case mouth instead of the shoulder, rim or magnum belt, it could cause a problem. Given the length, I assume a bottleneck case. Just do not want someone thinking that a 45 ACP or 9mm is ok in the same case.
     
  4. twofifty

    twofifty Member

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    Yes it is a bottleneck case.

    Thanks for pointing out the safety implications wrt too-short cases that are designed to headspace on the mouth.
     
  5. helotaxi

    helotaxi Member

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    You should still be above SAAMI min case length.
     
  6. gamestalker

    gamestalker member

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    You'll be just fine, and you won't even notice any difference if any exists. I once inadvertantly trimmed some .270 win. .010" or .012" shorter than minimum SAAMI spec. and couldn't decern the difference on paper, or chronograph.

    GS
     
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