Colorado Shooter Instruction - 223 -vs- 5.56 Ammunition There are some differences you'll notice right off the bat between .223 Remington and 5.56 NATO Ammunition: On the case rim, you'll notice “223”
![Hornady 041227 Lock-N-Load Swage Single Stage Primer Pocket Tool (.223/556 Only) : Amazon.sg: Sporting Goods Hornady 041227 Lock-N-Load Swage Single Stage Primer Pocket Tool (.223/556 Only) : Amazon.sg: Sporting Goods](https://m.media-amazon.com/images/I/61MiLkxJEkL._AC_UF894,1000_QL80_.jpg)
Hornady 041227 Lock-N-Load Swage Single Stage Primer Pocket Tool (.223/556 Only) : Amazon.sg: Sporting Goods
Bradite One Can Eggshell Multi-Surface Primer and Finish (OC64) 2.5L - (BS 381C 223) Middle bronze green | DIY at B&Q
![Blown primers on Hornady Black 223 75 grain? - Rifle - Technical - Brian Enos's Forums... Maku mozo! Blown primers on Hornady Black 223 75 grain? - Rifle - Technical - Brian Enos's Forums... Maku mozo!](https://content.invisioncic.com/r270761/monthly_2020_01/Primers.jpg.16d6cccf9ded1c3afa1487d06d56243a.jpg)