When I started gas checking a few years ago, I found it was a LOT easier to size and check them (lee push through) if I lubed them first. I would lube them again before loading. BTW, these are primarily low power 30-06 loads. It's not hard to notice that the boolits retain a fair bit of alox after sizing/checking. So the question is, should I continue to lube a second time (before loading) or not worry about it.