What is up with this 5.56 case?

[S13]

left is 5.56, middle is .223 Ackley Improved, what is the right one? .223 Ackley Improved SUPER?

 

[Moonpie]

Got fired in a .222 Magnum chamber?

I can see it now. Bubba wants to shoot his grandpappy’s .222mag but ‘dem shells is ‘spensive. So hold muh beer and watch this.

 

[S13]

Got fired in a .222 Magnum chamber?

I can see it now. Bubba wants to shoot his grandpappy’s .222mag but ‘dem shells is ‘spensive. So hold muh beer and watch this.

Im going to compare and see if it matches.

 

[Sam7sf]

Yeah it’s a form fire of some not good kind.

 

[S13]

Well, it is NOT .222 Mag






And the case mouths. It does seem to still be .223ish

 

[S13]

Here is another tibit of interesting information.

As you would expect the fired .223 will swallow a .223 bullet. Drops right in.

The weird fireformed case will not take the .223 bullet. It is like a resized .223 case ready to be loaded.

 

[S13]

Checkout the primer.

LOL, I don't think I've ever seen a convex fired primer.

 

[S13]

Stress marks?




I'm thinking now an OOB fire, but I don't see how the case didn't rupture.

 

[Moonpie]

I’m thinking it might have been fired in a .220 Swift chamber?
Never heard of that being done before but I suppose it’s possible.