I have three 9mm handguns.
My alloy formula for all three, two CZ's and an EMP.
50/50 WW and pure lead with a 12" strip of 40/60 solder, water dropped.
All my 9mm bullets are sized to .357, lubed with LLA, two heavy coats with very little leading, what little there is, one swipe with a bore brush and Chore Boy and it's gone, leaving a nice shiney bore, accuracy never falls off due to any leading.