Value of 300/221 brass.

[3GG]

I have recently been involved in a trade that has gone bad.
As my part of the deal, I got some brass and custom AR Upper (10inch bbl)
This whole deal has left me with a "Bad Taste".
I just want to part it out, and make it all go away.

What is the value of mixed head stamp converted 223 brass. it looks
to be once fired as 223 and then convereted to 300/221
Barrel is 10inch 1:6 pacnor 3 grove (is what i was told)


Thanks

Mark