In 3 years (at least 300 shots) I've had no chainfires or close calls with my 1858 clone.
I've shot Pyro P Pellets, Goex Black, 777, Clear Shot, Clean Shot, and Black Mag 3.
I use lubed wads 100% of the time and grease patch over the ball too over 75% of the time.
For ignition, I've used CCI...