*shudder*
Shooting 180 grain 'hardcast' lead bullets through any .40 is not where you want to start reloading. No offense intended.
Load 9mm with lead, jacketed or plated first. Use medium powders. Unique/WSF/HS-6/power pistol/longshot, etc.
All of them will work for most general purpose 9mm or .40 loads.
Unique is prolly the most versatile, mainly because it has been around the longest. Metering is ok, but not great.
WSF is as accurate as unique and almost as versatile. Load data is not widely available. Easy metering.
HS-6 is basically the same as WSF, except that it's more dense, and there's more load data available. easy metering.
Power pistol isn't the most accurate powder ever made, but it's hard to imagine a more suitable powder for 9mm and .40, at least in higher power loads. Very forgiving, easy metering.
Longshot is THE powder for high octane .40 loads with light bullets. You won't believe the load data hodgdon has listed. It's standard pressure, but it's hotter than most factory 10mm loads.
135 grain nosler JHP .40 cal+longshot=WOW.
http://www.hodgdon.com/data/pistol/longshot/index.htm