Realize that this has likely been asked a thousand times. New to the site and bought my first AR15/223. Looking for the real "skinny" on ammo to have fun with without breaking the bank! Want to buy 1000 rd cases if that makes any difference.
http://ammoseek.com/ammo/223-Remington
steel cased ammo is just fine as long as its not lacquer coated. My ARs eat polymer coated steel case like pez candy
Don't forget though that if you will be frequenting the local indoor range, they will not let you shoot the steel casing ammo.
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193 doesn't have a penetrator. 855 does...
Steel case or steel core? Different beasts. Never heard of a place that cared about the case... but XM193 is "penetrator" 5.56 with a steel core - it tears up their backdrops. The case shouldn't make a difference at all.
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