almost always use win primers and never had an issue
go figure indeed
I have used about every primer there is and quite a few WLR primer and some of the WLRM primers. Never had a visible pit from a primer. There must be a common denominator here somewhere.
Bad lot.
It's all over the internet if you look.
I have about 800 rounds of Garand ammo loaded with another lot number, 200 or so rounds into that, plus about 100 rounds of high(er) pressure .45-70 loads, no problem.
I keep all of my ammo stored with pertinent data on it, and if I see an anomaly, I will refer to my notes.
Common lot number to the problem.