Dead primers are a given if you shoot enough.

Just shot a box of 44 mag Tue that couldn't be any newer then 1991 since it had the stores name on the price tag.
I moved out of that state in 91 so 30 years old at least.
Only one dud in the box of 50 was probably bad from day one.

Ya I do commend you.

Most guys ( not all ) would have just posted the upper doesn't work.
Sent it back.

Then after a few days started shit talking/posting how it's not back, fixed, or a email wasn't answered in the 1st 5 seconds of sending/calling.

Instead ya just dealt with it and all, ya know like a adult.