I've seen some prenetration tests (clay, water, ballistics gel) on Youtube and the pentration of these in a stout 10mm load is impressive.

Quick question on loading the hard cast bullets: I haven't done much loading of lead bullets in handgun cartridges, mostly plated or jacketed. I see the CP bullets don't have any lube in the lube grooves, and the lube in the DT bullets is sketchy and inconsistent at best (maybe 25%). Worth worrying about, or just load and shoot? What's the easiest way to re-lube or lube the grooves?