223 5.56

these have been listed marked sold but the buyer never showed up 2 RCBS 2pc 223 Rem dies - appear to be LNIB with approx 780 pc 223 range brass $45.00 call/text 4o5 3sixO O774

Does anyone know anything about this caliber? What’s it good for, Distance and accuracy Compared to a 223… I’ve been reading on it thinking about building a custom remy 700, not sure if I want it in 222 or 223. I wonder how it would handle a 5r barrel? All wisdom will be appreciated!

Selling one of my ARs. Ruger SR-556. Paracord gun sling. 3 - 30rd Magpul Pmags. Original soft gun case. Gun has minor surface rust on one side near the front of the barrel from when it got wet when moving during a snow storm. Didn’t find out till several weeks later when I was unpacking. Rust...

Looking to buy a case or two of 223 ammo