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free bore

  1. BoatTail

    Calculating Free Bore on 6.5 WSM?

    I need help figuring out how to calculate Freebore (FB) for a 6.5 WSM custom chamber reamer for a new rifle build I want to do. Over the last few years I have had a number of custom chamber reamers made for various builds. In each case I either had a SAAMI reference chamber and drawing I could...
    • BoatTail
    • Thread
    • 6.5 wsm 6.5/300 wsm chamber reamer free bore freebore
    • Replies: 33
    • Forum: Gunsmithing

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