Couple of years ago my best friend shot a bear (with his crossbow) and called me and asked me what he should do with the fat. I told him how to render it and told him I wanted some. I've had it for over a year, and got it out to make some patch material for the flintlock - 40cal. I took it to the range for the first time and started using spit patches like I do with my Lyman Plains Rifle (.50). After about six or seven rounds it got hard to seat the balls.
I switched to the strip of patching material I had dipped in bear fat and rubbed off with my fingers. I found it easy to seat the ball and continued to shoot until I ran out of powder! No cleaning at all while shooting.
I was wondering if anyone else had done this and if it is typical?