I don't bother with lube for 9mm (and other short, straight wall cartridges), but there's certainly nothing wrong with using it if you'd like. All of my dies are carbide, and I do use lube with all longer straight wall cases, and all bottle neck cases.I thought when using carbide dies lube is not needed? Should I run some anyways? I have read multiple time imperial case wax is really good. Is that true?
The subject of Hornady One Shot case lube can be a rather sore spot here (and on other forums), as there are guys that swear by it, and other guys that swear at it. But when used with carbide dies, I've never had a problem with it, and like the fact that it's safe for both primers and powder. When I load longer straight wall pistol calibers, I spray a very short burst of One Shot on 'em, shake them up really well, let them dry, and load 'em up.