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Thread: Fast twist barrels

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  1. 11-04-2021, 10:40 PM #9
    Micky Duck
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    not necessarily....once all the powder has burnt,a longer barrel slows the projectile down...WHY 22lr is hard to keep subsonic with really short barrel....
    definately a longer barrel will be faster with large amount of powder to burn....7mm mag etc...but a 223 only NEEDS something like 16-18" to have complete burn....
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