Originally Posted by ryanusmc24
What happens if you shoot a 5.56 through a 223
The sun caves in on itself, your face melts and dogs start loving cats.
The worst things I have seen are blown primers getting hung up in the fire control group and high pressure signs on case heads.
It is more stress on teh gun and can cause accelerated wear on parts. Bolt cracking is a possibility down the road, extractor wear, and bad things if you did get an ignition with the bolt not fully in battery. SO , I subscribe to the school of "it is not recommended to shoot 5.56 rounds in a .223 chambered barrel."