Boxer or Berdan?
It may be 7.62x51, but it is not 7.62x51 NATO, not having the NATO cross mark.
Does the 82 mean 1982 manufacture?
Edit, I just figured out that it is Black Hills ammo. (Took some empty boxes from the range to use for hunting ammo)
Brass is made by Winchester for Black Hills and stamped BHA. I dont have a swager so its moot
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