H1Z1 Dupe Method First Method Out
I was playing for a few hours and found a dupe, its buggy but It let me eat berries 2 survive.
1) You need at least 3 people
2) Have one guy load up with shit and die in front of you
3) have 2 of your guys loot your gear now you can both loot but it acts like your both looting different gear at once.
4) What I did was I could not drag the berries into my inventory so I right clicked and ate them
Tip: You can probably use the crafting tab or discovery or some shit with it be creative also thank and rep if you feel like it 
EDIT: I am not sure and have not tested yet but this dupe may be with all kinds of storage and maybe you only need 2 guys?!?!?!?!?