Free: Contests & Raffles.
The only hang fire I ever had was because of not following routine and not firing a cap after cleaning and before loading - the excess oil in the nipple got me.
I have discontinued use of pyrodex pellets for this reason. I also unload and reload my muzzleloader every evening/morning to prevent condensation issues. These muzzleloaders will draw moisture over time, changes in temperature, etc. I noticed it getting in and out of the cold into a warm pickup and then warming up in a house and then back out in the cold again.TripleSeven loose powder has worked best for me and I still try to unload/reload every day.