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Thread: 7x57 subsonic

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  1. #2
    Gone but not forgotten
    Join Date
    Apr 2017
    Location
    Hamilton
    Posts
    4,129
    I can't help with 7mm, but the load will vary a huge amount depending on the projectile, so you need help from someone using the same one.

    In my 308, the 151gr cast bullet uses 8gr of Trailboss, while the 190gr Sub-X projectile needed 11gr. That's nearly 40% more powder! At the same 8gr load the Sub-X was 390fps slower than the cast bullet.
    Moa Hunter likes this.

 

 

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