I have a bottle of George and Roy's primer sealant. It's the size and shape of a finger nail polish bottle with a brush in the cap. I load my ammo boxes and simply dap a little on the primer. It spreads out just fine. So little is used (making it cheap), that I'm not about to go dinking around with other home made concoctions that may affect primer or powder. I seal my hunting loads, as they are going to end up wet from rain, snow, or condensation from coming in out of the cold. I don't bother with target loads, as I don't keep a massive amount loaded up for long term storage.
There are three kinds of men:
1) The ones that learn by reading.
2) The few who learn by observation.
3) The rest of them have to pee on the electric fence and find out for themselves..........