Do I have a chamber problem?

[jmoore]

I had it happen in a Mod 29 Smith in .44 mag. First shot on new brass, factory loads. Cracked and fractured all over the place. Those were just heavy loads.

Recently found an old box of .41 Mag factory ammo (1980s vintage) which had split cases before firing! Stored in an ammo can all these years (mine) so no ammonia, just poor factory processing...Other equally old .41 Mag ammo but from other mfgs.
in the same ammo can is fine.