kC,
I shoot a lot of B.P. and I will guarantee you will enjoy the experience. My recipe is W.W. Greener's recipe, 3drams of black with 1 1/8 oz of number 5 for Pheasants.I use fibre wads lubricated with beeswax (melt some wax in a pan and dunk the wads in for a few minutes then lift them out to drain)use a thick overpowder card 1/8", fibre wad, thin undershot card 1/11" then a thin overshot card if using RTO. Cleaning the bores after shooting, try using a mix of antifreeze (ethylene glycol) and windshield washer fluid.Good luck