How many lube grooves does a bullet actually need? I was planning to oversize a Lee 459HB mold up to .470+by making the body cylindrical,eliminating all but the front lube groove. The theory being that lube from the front groove will flow over the rest of the plain bullet ....Is this worth trying? I have read of cast revolver bullets without any lube grooves,but the idea doesnt seem to have caught on.