What's a good trade for 1500 once fired .308 brass??

Hey guys,

I'm gonna pick up about 1500 once fired .308 brass from a friend.
I could sell it but I'm thinking of trading in the forums for 223/556 brass as that is what I really need.

What would you guys consider a good trade?

1 for 1? (1 .308 for 1 .223)
1 for 2?

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