Another reason I didn't like the Lyman sizer was that every so often I'd get a glob of lube under a bullet and would have to clean it out. Was this because I didn't use a heater on the sizer?
most likely you didn't have your seating depth adjusted properly and there was a lube hole targeted right at the base of your projectile and it "injected" some lube there when there was no pressure to keep it out, IE you went to raise the ram, and that pause from the pressure let the lube in.
