After thinking more about it I'd have Gander Mountain exchange the weapon versus buying more primers or trying to lube the trigger-firing pin.

In the field or at the range...
I always spit patch, flip that patch and run it again.
Then alcohol patch.
Then dry patch.
Result is a really clean and dry bore which is what you want for sabots.

I also always detail clean after firing my weapons including barrel flushing and wire brushing. There is more about that in the post "Barrel Cleaning and Flushing"

IMHO
Best,