LAdder:
I bought 3000 rds of lacquered steel cased BB 9x19 about 1.5 to 2 yrs ago. I like to use steel case ammo when shooting in the winter; I don't have to go poking around in the snow for cases.
The good news: It runs great in "large" chambers, such as those in my semi-auto Uzi, Sterling MkIV subgun, Browning High Powers, and Springfield XD9.
The bad news:
1) In tight chambers like my Smith & Wesson 76 subgun or 940 revolver, fuggedaboudit. Sticks after only a few rounds' shooting warmup, and keep a cleaning rod and urethane-faced hammer handy.
b) In about 2000 rds I had maybe four squibs. Not "duds" but true squibs that went "pop" and lodged the bullet in the end of the chamber or just into the rifling. A second round would not chamber, but in the Sterling twice it resulted in an OOB. If you shoot open bolt subguns, sooner or later you will experience an OOB, but it was still exciting. No damage to me or the Sterling, thanks to that BIG ejection port on the right side.
Would I buy it again? Only if the price was right. I'd take steel cased Wolf before lacquer-cased BB in future, because the Wolf functions in the S&W 76. Nothing but brass or nickel will extract from the 940.
HTH,
Noah