Originally Posted by
lotech
Shoot the largest bullet that will chamber without difficulty; that may be a .359" and don't worry about bore dimensions. I've had very good results using Winchester brass as it doesn't size down oversize bullets. However, my brass is old. Hopefully, newer Winchester brass also has case walls thin enough to accommodate fat bullets. Wheelweight alloy should work fine, if not use something harder like a Lyman #2. Taper crimp very lightly, enough to prevent bullet movement under recoil and no more.
I've had best results with 9mm using heavy .38 Special bullets such as the 150 grain roundnose as cast from Lyman's obsolete #358212 mould; better accuracy and shoots to point of aim.
Leading... the Chore Boy trick requires no solvent to work effectively, but a brass brush and any solvent should also work, just not as fast. I don't know anything about powder coating and probably won't until the conventional sizing and lubricating method fails, but if powder coating works well for you, go no further.