thanks for the reply. can you show it in use on your gun. as I am very interested it trying it. thanks.
Okay Toot, I have taken a few pictures and hopefully the pictures will let you know what I am using to block the touch hole. The magnet I used, I bought at Harbor Freight. There are other brands that have a stronger magnetic attraction, but the Harbor Freight one will work.
These are the common flush kits that are out there. From the inside to the outer edge:
A threaded adapter for 1/4-28 to use in a standard nipple in a gun that has a barrel pinned to the stock. Note that the nipple has a rubber gasket to seal the nipple seat. The next one is the magnetic flush kit sold by the Luck Dog. That's great because it can used to cover a simple drilled touch hole. The last is the clamp on flush kit. This one requires a smaller breech than the King's Musket and I am always losing track of the gasket. I prefer the magnetic flush kit. Note that all of the flush kits have a weighted barb on the end that is in the cleaning solvent. Without the weight, you can spray that dissolved fouling all over the work area. I drop the weighted end in a gallon jug of solvent (water and some soap or whatever is your favorite solvent)
The next is the magnetic block. I have used a piece of plastic black electrical tape as a gasket. You can see the rough edges of the tape on the magnet. It works pretty well. It is a block and a toothpick or with the touch hole of my musket, a bamboo skewer is a better choice than a toothpick.
The touch hole on my King's Musket. I have no liner to remove, and I have just enough flat space around the touch hole for the magnetic kit to seal it off.
Flush kit in place.
Magnetic block in place.
I find the block best to use in the field or a toothpick to block the touch hole. I don't get the flushing action, but I do get the fouling removed and can complete a good field cleaning.
With the magnetic flush kits and the block, you must be sure that the touch hole area is flat. Any part of a liner that is above the flat of the barrel is a potential leak. You need a gasket that is larger than any part of a touch hole liner. I have a couple of screw in touch hole liners that are very close to the edge of the gasket, and these have a leak under the pressure of flushing.
Hope these pictures help you to keep your gun clean.