I primed a bag of 100 starline 32-20's the other day, and about 1 in 5 had rather tight primer pockets, about 1 in 10 were extremely tight. No primers were deformed and the end result looked and felt normal and shot normal.
Primers were cci small pistol.
I'm about half way through a block of 1000 and haven't had any trouble with the primers in 357 brass.
I've primed maybe 5,000 or so cases and this is my first experience with tight primer pockets.
Long story short it's made me realise I know nothing about primer pockets. What do you blokes do, does this happen much?