So, it looks like even though there have been some issues, they're not that common. The conclusion is that it's not recommendable for duty use.
PMC, OTOH, has a good reputation over here. Never heard it was cleaner or dirtier than other brands, but I did hear their brass is durable and good quality. Good for reloading.
Polyphemus... That got a laugh
. I've had a few American friends visiting me over here and surely they got some first hand information of our culture and traditions. Looks like you got some of that, too
.