I converted some 300 Blackout Brass last winter and I have more then I will need. Brass all started out as 223/5.56. Processed on Dillon 650: - Deprimed - Primer pockets swaged - Sized and trimmed to 300 BLK in Dillon carbide die and trimmer - Chamfered/final trimmed with Giraud Tri-Way trimmer - Spot checked dimensionaly with Sheridan Engineering gauge - Primer pockets spot checked with gauge - Stainless tumbled - Annealed on AMP induction annealer - Final length 1.350" +/- 0.001" - Shipping in US only. I have two lots of 500 Federal headstamp, all small letter "FC 223" $65 shipped per lot. I have one lot of 500 of mixed Federal headstamps, $60 shipped. I am not a professional processor - this is my own brass and while I have spot checked it, I haven't inspected each piece. I will throw in some extra brass in case I missed a cull or two.