You can make brass from 223....factory ammo is worth couple buck a round....you would need to use cast bullets.
you can make brass from 223 brass. if you have a lifetime to do it in. I got bras and bullets from graf and sons. bullets are jacketed round nose at .351of course. for cast I got a lee push through sizer for a 9mm and I sized to .354 so that worked well.
my oldest shoots the cast to 1.5 inches at 50 yards with my old eyes.
