Come on now, we need Voters, get out to the polls Look what happened you know when
Op, are you annealing your brass?
Annealing will extend the life of the brass.
A case head separation is normally an indication of excessive headspace in the gun, either from a mechanical issue with the gun itself or from the reloader pushing the shoulder back too far during reloading.I do not think it will help that far down the case, maybe the case mouth and shoulder.
Even if it did it is not worth the effort.