He asked me not to spread it around, I’m not sure why, but he’s 80 and I’ll respect his request but it’s no huge secret overall. Mostly Mink Oil with a smidge of bees wax to stiffen and his discovery, which is a super slick all natural food grade additive. Most anything that will not allow the fouling to harden will work with a tight patch/ball combo. Last week I shot 30 straight out of the .36. Last load was as easy as the first. Tight combo and lots of grease/tallow lube is the key. My squirrel guns may get 5 shots in 5 mins as we’ve lots of squirrels around here. For my deer guns I go more for first shot accuracy and don’t care about reload ease so I use less lube but I do use the same lube for all as range time is hunting prescribe so I don’t like variables.
Also, use precut if you like, it’s just as HC. Strips were very common in the rural south so I use that.