308 Loads Advice

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  • grahamsy2k

    Sharpshooter
    Rating - 100%
    6   0   0
    Jul 24, 2012
    623
    18
    Terre Haute
    I've searched the interwebz for awhile looking for what others are loading for their 20in barrel bolt gun. Since I haven't found much I thought I could help someone else by sharing mine.

    Remington 700 w/ 20in barrel 1-10 twist
    168 sierra MK
    42.0gr of IMR 4064
    COL 2.800
    Win Primers
    Velocity averages 2500 10 feet from muzzle

    I can get extremely good groups out of this. My problem is the velocity. Applied Ballistics says it goes subsonic a little after 800yds.

    My other problem is that loads of 43.0gr of 4064 runs awful through my gun.

    Should I start from 42.0 and work my way up and stop when my groups start to open up and hope my velocity increases enough?
    Or should I go down on bullet weight?
    Or Other?

    If you have a 20in barrel please share what you loading.
     
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