7SAUM freebore

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Salar600, Dec 26, 2012.

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  1. Salar600

    Salar600 Well-Known Member

    Sep 16, 2012
    I'm in the process to build a 7SAUM in a long action to punch paper with 168 or 180grs bullets.

    I red everything I found about the subject but still have a question.

    What is the best troath length considering case filling and bullet weight?

    Should I make a dummy round and place the begining of the boatail flush with the end of the neck? Go deeper or less???

    The barrel is a Kreiger 1x8,5-5R. Obviously I don't know if the 180 will be more accurate than the 168 so should I troath for the 180 or the 168?

    What is the way to go? What do you guys do?

    Thanks, Mart