FWIW:
I'm not familiar with "WinClean" 9mm ammo, but I have shot what I "guess" is something comparable in the Federal line of ammunition.
Federal "BallistiClean" 100gn. (lead free/non-toxic) is the most accurate 9mm ammo I've ever experienced. It's pricy, but when I get a new 9mm pistol and I want a true indication of it's potential accuracy I try to run some BallistiClean thru it.
I'd gotten into the bad habit of just shooting the cheap Wally World White Box 9mm ammo and just assumed all 9mm ammo would probably be relatively accurate.. Not so, the BallistiClean was WAYYY more accurate.
Best Wishes,
J. Pomeroy