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  1. Nimrodmar10

    Gunsmithing The No-Go Gauge Went

    That may be my problem. My Manson Go gauge measures 1.3555". The Manson No-Go gauge measures 1.3585". The Scotch tape I used measures. 0015". With one layer on the No-Go gauge, the bolt would not close. So my chamber measures ~1.360" max. Thanks for the help. I'll contact Manson Reamers...
  2. Nimrodmar10

    Gunsmithing The No-Go Gauge Went

    Today I changed out a barrel on a Impact Precision 737R with a new Proof Stainless 6 GT barrel. After torqueing the barrel to the action to 75 ft. lbs. I put a Manson Go gauge in the chamber and closed the bolt. No problem. I then put the No-Go gauge in and the bolt closed easily. Problem! I put...
    • Nimrodmar10
    • Thread
    • 6mm gt excessive headspace impact precision proof
    • Replies: 16
    • Forum: The Armory
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