You know, I don't work for SFPD, but the guys that DO work on their range staff are well respected folks within the L/E firearms community in the Bay Area.
I'd already heard about this situation, and what they'd been going through trying to resolve the concern.
I hope nobody's really picturing them as some agency where a fellow might wander up to the firing line, hang a paper target up to flutter in the breeze, fire a round, and then say "Well, Goooollllyyyyy ... There must be sumpin' wrong with this gun!"
Imagine for a moment that the firearms staff working for a hypothetical large agency might have the interest, knowledge and experience to try different ammunition, in different pistols, in the hands of different shooters, on targets properly placed on target backstops, at various distances ... and then ... imagine that they might further consider the possibility of checking pistols which exhibit a potential problem to see if there's a serial number/production connection ... and even imagine for a moment that they might realize that they could consider replacing parts on various pistols, including the barrels, and see if the problem is corrected ... and whether the "condition" follows any particular part, like say, a barrel, when it's placed in a different pistol ... and then imagine that they'd realize they could, and should, attempt to identify & resolve their concerns with the manufacturer.
And then imagine that more than one firearms manaufacturer occasionally has "issues" arise with pistols purchased by L/E agencies ...