The sealant around the primers indicates "it could/might" be 5.56 ammo which you're not supposed to shoot in a 223. If you've got more of this ammo, I would not shoot it until you know for sure whether it's 223 or 5.56. The primer sealant is not a 100% indicator it's 5.56, but an indicator. Different makers put their ammo together different and call it different things.
Is there any type of sealant around the bullet/neck area? Indications of a crimp on the bullet/neck area?
Bookmarks