Thread: Incipient head seperation and a possible mitigation method.

Originally Posted by Dicko

I just adjust my fls die so the case fits in the chamber with a soft touch required on the bolt.

My cases last as long as my unbelted 06, .270, .308 brass.

Ignore the belt and size to the chamber or have I missed something?


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The issue is more pronounced in the belted cases due to the hard spot where the belt finishes becoming a natural place for the thinning to start. Once it has started, the flow is concentrated in the same place so tends to show the cracking earlier than brass without the stress riser where the case wall abruptly narrows at the place the belt stops.