ever use a 7mm08 case for 308?

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

  1. cycloneman

    cycloneman Active Member

    Joined:
    Dec 16, 2008
    Messages:
    8,023
    Location:
    Louisiana
    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

    Joined:
    Feb 3, 2007
    Messages:
    10,591
    Location:
    NW Florida
    Not 7mm/08, but I've "upsized" 243s and used them. Not a problem.
  3. gdmoody

    gdmoody Moderator Supporting Member

    Joined:
    Sep 7, 2007
    Messages:
    9,017
    Location:
    Northeast 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

    Joined:
    Feb 26, 2007
    Messages:
    18,241
    Location:
    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

    Joined:
    Aug 19, 2011
    Messages:
    673
    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,
Similar Threads
Forum Title Date
The Ammo & Reloading Forum worst .223 ammo I've ever shot Apr 12, 2014
The Ammo & Reloading Forum Who else is waiting forever to get your order from Z Cast bullets filled? Feb 28, 2014
The Ammo & Reloading Forum Anybody ever use the "Worlds Finest Trimmer" Jan 30, 2014
The Ammo & Reloading Forum This is only impressive if you've ever had to hand feed 10000 primers! Jan 17, 2014
The Ammo & Reloading Forum Anybody ever make their own jacketed bullets? Dec 14, 2013