Jim,
Do a 5 shot ladder load starting at zero compression and work up by one grain.
Usually 5 loads will show the best load the you can refine.
Do one test with LR primers and the next with LP primers.
I boxed up 50 GG and 50 with diapers

as well as some wads. I didn't know if you had .40 caliber wads or not.
I don't use any lube with the PP but this is up to you if you do or not. I don't see a pulse using lube except for the hunting loads.
I cant get to town today but I will get it on the way.
Kurt