Most of the surplus ammo CMP used to sell was packed in clips in bandoleers. Six clips per bandoleer and four bandoleers per .30 ammo can = 192 rds per can. When you watch WWIi movies and the troops are grabbing ammo out of a jeep they are grabbing the thin cloth bandoleers (not the heavy canvas belt type with eight clips but the thin fabric ones with 6 clips).
Like this one:
Most of the surplus .30-06 is sold out these days and at best you get loose ammo in a can, or commercial ammo in boxes. I still have a couple of cases (four cans per case) of the HXP ammo packaged that way.