ever use a 7mm08 case for 308?

Discussion in 'The Ammo & Reloading Forum' started by cycloneman, Mar 15, 2012.

  1. cycloneman

    cycloneman Well-Known Member

    Dec 16, 2008
    just wondering if anyone has every done this. The cases are pretty close. The 7mm would have to be cut down to spec if this is possible. then i guess the concern is for the thinning of the neck wall.
  2. Alpo

    Alpo Well-Known Member

    Feb 3, 2007
    NW Florida
    Not 7mm/08, but I've "upsized" 243s and used them. Not a problem.

  3. gdmoody

    gdmoody Moderator Supporting Member

    Sep 7, 2007
    Athens, Georgia
    NO, but I have used a .270 case for 30.06, just to see if I could,
  4. cpttango30

    cpttango30 Guest

    YOU tend to get a more uniform neck tension. Because of the expander ball drawing the smaller neck to the larger size.
  5. JLA

    JLA Well-Known Member

    Feb 26, 2007
    Heart Of Texas
    Yep. Cpt. beat me to it. Thats somewhat of an unspoken benchrest shooters technique.

    A 7/08 run thru a .308 die and trimmed to spec and fireformed then necksized would have better neck tension than a .308 case necksized, and you prolly wouldnt have to turn the neck either.
  6. 1 Eyed Jack

    1 Eyed Jack New Member

    Aug 19, 2011
    OK, it's not unusual for me to be confused, but I thought a 7mm/08 was a wildcat starting with a .308 and necked down to .284(7mm), not sure if the shoulder position/angle is also changed,
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