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Thread: Article: Barrel Chamber Depth Verification

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    Administrator J.Baker's Avatar
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    Article: Barrel Chamber Depth Verification


    "Life' is tough. It's even tougher if you're stupid." ~ John Wayne
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urgent circumstances, desperate circumstances, profanity provides a relief denied even to prayer.” —Mark Twain

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    Basic Member Stockrex's Avatar
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    Mr Baker, is the protrusion of 0.125" for any caliber?
    newbie from gr, mi.

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    Basic Member Robinhood's Avatar
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    You can use a caliper or depth mic and measure from the rim to the face of a bolt head of any rimless or rebated rim "cartridge" and you will see they are all very similar dimensional in the axis for the extraction feature. The Savage bolt head design dictates the length of the case protrusion. They all pretty much fall in the same depth. Even belted cases.
    The Dunning-Kruger effect is alive and well.

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    The factory acceptable specs are .125" min, .130" max. for all calibers, EXCEPT the 110 BA .338 Lapua magnum, which is .140" min., .145" max.

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    Basic Member Bolthead's Avatar
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    Great information. Thanks. That is what I love about this website.

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    Basic Member memilanuk's Avatar
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    Excellent, thanks!

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    Savage "cartridge" barrel depth

    Quote Originally Posted by Robinhood View Post
    You can use a caliper or depth mic and measure from the rim to the face of a bolt head of any rimless or rebated rim "cartridge" and you will see they are all very similar dimensional in the axis for the extraction feature. The Savage bolt head design dictates the length of the case protrusion. They all pretty much fall in the same depth. Even belted cases.
    Robinhood...Thanks. Your explanation covers/explains depth and protrusion compatibility!
    Dennis Hahn.. AKA (Dhahn)
    Last edited by Dhahn; 09-27-2015 at 06:24 PM.

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    You should able to use this technique for re-throating worn barrels with just a reamer. After removing stock from the threaded end ream till you get the required .125" dimension and you're good to go.

    Set headspace with a new unprimed case, be sure the bolt will not close with a piece of Scotch tape on the case and that's it.


    HM

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    Basic Member Stockrex's Avatar
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    Quote Originally Posted by halfmile View Post
    You should able to use this technique for re-throating worn barrels with just a reamer. After removing stock from the threaded end ream till you get the required .125" dimension and you're good to go.

    Set headspace with a new unprimed case, be sure the bolt will not close with a piece of Scotch tape on the case and that's it.


    HM
    one can rethroat without setting the barrel back?
    newbie from gr, mi.

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    Basic Member Hotolds442's Avatar
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    "Removing stock from the threaded end" is the same as setting the barrel back.
    Originally Posted by keeki
    Guess it doesn't really matter. If ya cant afford $15, you won't be buying much anyways

  11. #11
    Basic Member Stockrex's Avatar
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    Oh I see it thanks

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