If guys used a motor to spin the drill they'd drill the hole all the way through.

I always hold the drill and spin the BP. I put a little pressure on the drill sideways to cut out the carbon. I do it every 10 shots. Unless I shoot less than 10 shots at the range, and then I just do it when I get home.

It's easy with a BP that needs no grease with BH, and loosens by hand. Just spin the BP off, insert drill and spin, and then spin the BP back on. 30 seconds.