Problems with Neck Sizing

Discussion in 'Reloading' started by tweek1142, Jan 12, 2013.

  1. tweek1142

    tweek1142 Well-Known Member

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    I'm having issues with neck sizing on a 300WSM. I'm using once fired win brass. When i neck size and place the brass in my rifle (without a bullet or powder) my bolt closes hard.

    Any ideas?
     
  2. Joe King

    Joe King Well-Known Member

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    You need to bump it down with a body die just enough to ease the effort it takes to close the bolt.
     

  3. farout

    farout Well-Known Member

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    I load for a 300 WSM. I use redding bushing dies with Norma brass and neck size only. Haven't had too many issues.

    It could be a shoulder issue. Soft brass might expand so much on the first firing that it is now hard to close the bolt on. Are the once fired cases hard to chamber before being neck sized?

    Might be the firing and then resizing of the necks is stretching the neck and the neck is too long for the chamber. Should probably check the max cartridge length an make sure that it is not over after sizing the necks. Which brings up the question: Are you trimming the necks after the resize?
     
  4. tweek1142

    tweek1142 Well-Known Member

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    yes I am trimming after neck sizing. Ill Try adjusting the full length die and bump the shoulder.
     
  5. 4xforfun

    4xforfun Well-Known Member

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    Dumb question...once fired in YOUR gun???
     
  6. boomtube

    boomtube Well-Known Member

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    "Any ideas?"

    One. FL size.
     
  7. BountyHunter

    BountyHunter Writers Guild

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    Yes, the answer is FL size. 65,000 PSI is not conducive to NS only IF you want the brass to chamber.

    NS only is not the cure all pancea some like to promote especially if you like reliability of the gun. The hard chambering issue will hit you at the worst time and that is why the FL size.