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

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    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

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

  3. gdmoody

    gdmoody Moderator Supporting Member

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    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

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    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

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    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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