As a caster of almost 60 years I've used many different lubes. Some commercial, some home made. Just recently started to PC my own bullets after trying commercially PC bullets. My bores stay absolutely lead free. No streaks, & no freckles of lead when I push a tight fitting patch thru the bore. For me I have seen a definite improvement in a clean bore & accuracy. PC is becoming more & more main stream with cast bullets , both commercially & with the home caster. The reason being is that it works. PC is super slippery, more so that a standard lubed bullet. Also allows for a softer bullet if desired. For sure I will not get rid of my Lyman & RCBS sizer/ luber;s. For those who feel PC is not for them there's no problem. Just keep lubing the way that makes you happy. For those who wish to PC should be able to do so if that makes them happy. No problem there that I see. If you haven't tried PC bullets , try some & see what you think. Maybe you might enjoy them. If not nothing lost.