I hunted several years in the early aughts with a Lyman Trade Rifle and Lee REAL's that I cast. The only casting difficulty I have is that sometimes my molds do not close perfectly true. One block will be ~0.020 out of alignment with the other. I've got used to eyeballing the closed pair to make sure they are even. I guess there is just a little play in the aligning rod and groove in my set.