The following BP (muzzle loader) lube recipe is primarily for Offshore, but also for all interested ML shooters. I know that we each have our favorite patch & bullet lubes, but Stumpy's works very well. I.e., it doesn't degrade accuracy, works well in cold weather, and allows as many as a dozen shots (using real BP) without having to wipe the bore between shots. Enjoy!
Stumpy's Moose Snot
Beeswax, 2 oz.
Castor Oil,* 8 oz.
Murphy's Oil Soap, 1 oz.
Heat beeswax in a soup can set a pot of water or a double boiler. I keep my beeswax in a one pound coffee can and measure out what I need by melting it and pouring it into measuring cups. Add just enough water so the inner can does not begin to float (should be just short of the lube level in the can). Heat the water to a low boil. In a separate can, add the castor oil and Murphy's oil soap (cold). Once the beeswax is melted, swap the castor oil can in the pot of water for the beeswax. Add the beeswax to the oils. It will clump up. Stir with an ice tea spoon as the mixture heats up. When it fully melts there will be a scum that floats to the top and just won't mix in. Be patient. DO NOT COOK THE MIXTURE. Once the solids are dissolved there is no need to heat further. Skim the scum off. Remove the mix from the heat and wipe the water off the outside (so it won't drip into the container when you pour it out). FINAL TOP SECRET STEP: Add a teaspoon of Murphy's Oil Soap and stir vigorously. This last step makes the lube frothy and smooth - really adds to the appearance; though it doesn't seem to matter to the function of the lube. Clamp the can in the jaws of a Vise-Grip pliers and pour into the waiting tins. Allow to cool for 30 minutes.
Note: it if is a hinged tin - line the edge that has the hinges with a strip of aluminum foil so it doesn't ooze out before it cools.
*Use any vegetable oil, e.g., canola, olive, peanut