Converting 223/5.56 brass

[Caveman Jim]

Yeah IMHO the best option for the OP to do with that brass is to scrap it.

I've been saving PSD brass, which is the exact same thickness as LC brass for conversion. I've got enough 300BLK brass to last the rest of my life so I plan on selling or trading it.

 

[arrowshooter]

I'm going to have do agree with scrapping it also. My concern would be that the brass was not produced to full blown .223/5.56 specs which would be bad

 

[Deavis]

You can also make 7.62 x 25 or 7.63 Mauser from it.