Reamer question

Discussion in 'Gun Project Questions & Gunsmithing' started by Junkout, Jan 8, 2018.

  1. Junkout

    Junkout

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    I ran across a neck reamer that I'm not certain what it's for. Any help would be appreciated..
    It says
    6mm spec nk rmr
    . 3375nk
     
  2. DaveTooley

    DaveTooley Silver $$ Contributor

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    The diameter is .3375".
     
  3. Junkout

    Junkout

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    Yes sir that is true and I understand that. But that doesn't explain anything other than the diameter of the NECK reamer... Please explain
     
  4. STS

    STS

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    That's quite a bit of clearance over a loaded 6mm case neck. o_O
     
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  5. Junkout

    Junkout

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    I'm thinking it's not a 6mm per say.. It's a 6mm spec? I've heard of a 23x40 spec..
    But I'm hoping for someone with some real knowledge to help me out with what I have
     
  6. Ggmac

    Ggmac

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    Real knowledge on a web site is the reamer maker or customer that ordered it .
     
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  7. Dusty Stevens

    Dusty Stevens COVFEFE Gold $$ Contributor

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    what does it look like? its gonna be hard to get answers without seeing it. is it a chamber reamer? a 6mm chucking reamer? thats like me saying hey do yall know what this is? it says 7/8 on it.
     
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  8. DaveTooley

    DaveTooley Silver $$ Contributor

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    From the information you provided a neck reamer is a chucking reamer. It may have a pilot on it but it's still just a chucking reamer. It brings an existing hole up to a larger diameter. The length of that hole is controlled by you.
     
  9. Junkout

    Junkout

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    I'll try to get a pic of the reamer tonight. Maybe that will shed some light.
     
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  10. hogpatrol

    hogpatrol Gold $$ Contributor

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    Another guess: a regrind of some sort with the original markings.
     

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