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.
"A man who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself.
John Stuart Mill."