A friend called me saying he was having a problem with his muzzle loading rifle. He couldn't make it fire despite being loaded. I told him to bring it over and I would do surgery on it. Well, he shows up with two rifles. One a sidelock kit built CVA and a (excuse the language ) CVA inline. Neither could be fired despite being loaded. Turns out they were loaded with very old Pyrodex pellets. And, he had loaned them to his son, who loaned them to someone else and both returned in pretty cruddy condition. The sidelock required pretty standard methods to finally get it to fire. I removed the nipple, unclogged it, put some 4Fg into the drum and picked it into the breech area as much as possible. Replaced the nipple and charged that with some 4Fg also. First try, after making sure the sabot bullet was seated, it went 'bang'. Then the no-no rifle...I had friend disassemble the bolt action to get at the nipple. That was cruddy and oily. I had doubts we could shoot it clear as he had tried pulling the sabot and sent the screw all the way through to the old pellets. But, I tried anyhow. Hated touching that thing. Made me feel like I was sinning and getting dirty. Enneyhow, we got some priming into the breech area and put it all back together. Made sure the bullet and charge were seated. Replaced the nipple and charged that. Then I let friend shoot. It shot but a lot of flame poured out of the muzzle. I mean poured down as it it were flaming water. Strangest phenomenon I have ever seen with a muzzle loader. I cannot explain this. Well, at the end I gave him a few ounces of 4Fg, a nipple wrench and pick, some .490" round balls, lessons in cleaning and care of a muzzle gun. I advised him to get some black powder for the sidelock but he is sticking with the aged Pyrodex pellets he has, still in package. This is typical behaviour for a once a year shooter. The ml deer season opens next week here in Arkansas and he wants to be 'ready'. It felt good to help another muzzle gun shooter, even if he is a once a year type. But, I have a feeling he will be back next year for another help session. I don't mind as I believe a big part of this game is in helping others.