I've used thousands of rounds of lacquer coated ammo with no problems of any kind.
If you think the lacquer will melt, try using a blowtorch on a fired case. It will eventually burn, but not melt.
I don't know where these old wives tales about steel cased ammo came from, but they're just that. Old wives tales.
I didn't fight to defend your freedom so you could vote to take away mine.