My reloads are under .20 a round with free labor. Lake City M193 5.56 is .30 a round and LC M855 is about .40 a round. LC M193 shoots very well in everything I own and I don't have to worry about squibs or misfires. It's the only stuff I shoot other than my own reloads.
I used to shoot about anything I could get, .223 and civilian 5.56. The .223 can be under powered and give you problems, some cheap ammo is incredibly dirty. It's not worth it to me anymore. My range time is valuable and I don't want to waste it with poor ammo.