Weak link is the Berdan Primer; use it up in 2yrs, or lose it.
I have tons of berdan primed crap that is 65 years old.
It still goes bang every time.
It is not the primer pocket that makes a difference as to longevity, it is what the primer in the pocket is.
Berdan primer pockets only suck because they are difficult to reload.
Technically they are superior to Boxer in reliability because they have two flash holes.