Twilight 2000 mechanics question

Hi guys,

We've heard estimates that Twilight 2000 characters can take excessive
damage without becoming dangerously wounded or unconcious.  I believe
that Rob Dean estimated that an average character could be hit with
Six or so .50 calibre machine gun bullets before becoming unconcious.

Since I don't have the game, could someone with the books look up the
following for me?

How many 120mm shells does it take to kill a Twilight 2000 character?

2G Scott
"'URuuumph!' he said, pulling the steel core penetrator from his ribcage.
 'It's a good thing it wasn't a depleted uranium projectile.'"
        --  Rob Dean