Thread: 223 over resized brass?

Originally Posted by Tentman

Yes I thought of that too. My own sized cases will take 2-3 layers of 0.001 aluminum tape to "no go", old mates cases, well I gave up at 5 layers and the bolt was still dropping.

Another way is using your "comparator" just measure a tight or correctly sized one and the loose one.

As mentioned earlier if they are like say,, about 0.015 - .020" load up some "light" loads to fire form them.