AH YES. Cleaning out the cones. I scrub my cylinders with a Toothbrush, expecial the back of the Cylinder, and with said same toothbrush I scrub the cones and cone recesses. Then, as I run the dry patch thru the chamber, I use a brass enhanced pipe cleaner in the Cones and also then blow em out. When I get to the range for a match, I Cap ALL the chambers and bust a cap. The idea is the Cap will burn out and contaminants that don't belong in the chamber. Cheap insurance.
A while back I ran into a suggestion to use a Rotary Electric Toothbrush to clean the Cones. So I ran right out and bought one. Total waste of 7 Bucks. Oh well.
We do shoot a Lawrence Welk Sweep around here. 1 on 1, two on two, Three on three then 4 on four. Some of the younger crowd look at e kind of funny when I call it a Lawrence Welk sweep. "Who is Lawrence Welk??" I always tell em he was a famous End of Trail winner way back when. (snicker snicker)