Originally Posted by Der Ami
After a fair amount of forming cases from other available cases, it is my opinion that the considerable re-sizing of the 303 cases caused severe work hardening of the brass that was not relieved.

Indeed. Indeed so.

Quote
Also, it should be noted that the ammo was shot and split sometime after loading and brass is subject to cracking after age hardening, we have all seen antique ammo with split necks.

No.
Not so in this case.

Carcano