I have a BG 380, KAK serial number. I've fired it 300 times and have dry fired, with snapcaps, another four hundred.

Has anyone experienced a breakage in this serial number range or after several hundred pin impacts?

I sent an email to S&W customer service with my concern.
Their reply:
"You have no worries about the firing pin as long as you use quality American made ammunition. We have seen issues with foreign made ammunition that tend to have harder primers."