TC, the brand new lcp i am shooting every day. 50 per day, no leading. I'll check again, but i just brush out. You have a step that is wrong somewhere. You should order a smallest order from your favorite hard cast lead bullets supplier and do 5-1-10 on that. You do have convection oven? That helps, so they reccomend. I stained and cooked around 1200 last nite. Just check all your steps and maybe order some. I am gonna order some unsized/unlubed from my supplier, $58 for 1000, ain't bad. I stain (new word i stole from hi-tek) then size to my die, not his. Sometime if ya mix a extra 1000 in with what you have already cast really helps, I shoot alot. 3 calibers of pistol.
"its shake and bake mama"
https://www.youtube.com/watch?v=sISgevoaTcU
Buy quality equipment, it will be here when your 80.