[Big Redneck]

After you load but before you charge the pan try taking a pic and run it through the touch hole. This makes a slight cavity in the barrel powder and insures the touch hole is clear. I use a piece of copper wire.

As has be said, run 1 wet/damp (t/c 17 or #13) patch then 1 dry between shots.

 

[Big Redneck]

Had a guy who had a similar problem years ago, he removed lock and tried shining a light through the touch hole into the barrel, when he looked down the barrel the light was barely visible,found he had a built up of crud in the bottom of the barrel. He used a scraper on the end of the his ramrod to root out the crud.
When he dropped a light into the barrel the riflings looked fine.
Hope that helps, sounds like the oils are what caused the ignition problems.

 

[Big Redneck]

When they find the problem please post, I would like to know what the problem is in case I or any of my friends run into the same deal. Hope it works out so you get out and "make meat" this year.