That triple 7 is based on sugar type chemicals and can leave a lot of crude in the breech area, like tar. I have been using cci`s #11`s and black H/S 3f with no misfirer's form when I started this black smoky stuff. I clean out my oiled barrel with meth's before going to the range, take out the nipple and put the breech end in a container with some meth`s, ramrod and patch then pump it up and down to flush all the oil, crud out. Then with barrel back on the rifle put clean patch on rod, push dawn to breech end, fire two caps and check patch, should be crappy on the end, then you are good to go.
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