the flashhole is a lot smaller than the primer pocket. by leaving the spent primers in the casings the media cant get stuck in either hole. found that if you use a primer pocket tool attached to a drill and on slow speed, the job of cleaning the primer pocket is done nicely. also use a flash hole reamer to clean out the flash hole. this job i dont use the drill. i dont get in a hurry when reloading as i enjoy taking time to do the job right. now if you are doing a lot of reloading then its every man for himself.