308 smk 190 n140

Discussion in 'Reloading' started by UNIQUE ALPINE, Feb 29, 2012.

  1. UNIQUE ALPINE

    UNIQUE ALPINE Member

    Messages:
    10
    Joined:
    Feb 28, 2012
    Hi
    Can one tell what a 308 load with a SMK 190 bullet loaded with N140 powder 42.5g will give me in fps i don't have access to a chronograph
    Will be using a 27'' barrel with a 1/10 twist

    Thanks
    Andy
     

  2. Bart B

    Bart B Well-Known Member

    Messages:
    2,483
    Joined:
    Dec 25, 2005
    On this site

    Products - Lapua

    It looks like your bullets will leave someplace around 2500 fps. Depending on the specific barrel, powder and primer lot as well as case neck tension, it could be up to 100 fps faster...or slower.