After reading, experimenting, learning and making a few messes this winter here's what I've come up with at this point. Maybe this will help others along the journey to a messless pan lube system.
Boolits are sized and gas checks put on in a Lee Sizer die. Cheap but effective.
90 of the little buggers all lined out nice and purdy with my homemade "Sticky Blue" lube poured in.
I cut off the bottom of an old trekking pole until I got to where it would just slip over the .452 boolits. The tube tapers so it gets larger towards the top. I ground the tip down to make a sharper cutting edge.