So what ammo do you "set aside" for 5.56/223? XM193? M855? standard 55gr fmj 223? Do you think there will be a difference if you ever needed that ammo? Using m855 vs Xm193 vs standard 223 55gr fmjs like Wolf Gold. Is it worth spending the extra $60-$80 for 5.56 for 1000 rounds or just stick with the standard 223? Might be a dumb question but thought I would ask.