Some folks wrap their breech plug with Telfon thread sealing tape and then also use anti-seize grease. The tape stops the powder residue from blowing back into the threads which can seize the plug.
Another alternative is to use the Blackhorn 209 smokeless black powder substitute. Swabbing is not required between shots when using it, however it does require using a smokeless powder solvent to clean it.
The cheapest way to get Blackhorn 209 is to call Ed's Gun Shop and ask for Carlos. Including delivery, his price may actually be less expensive than the average retail price, but the minimum order is 2 containers.