[m&p45acp10+1]

JC the primer flash will not always blow the grit out. I have had to clean the unburned powder out of my wife's rifle at the range. I did not check the flash holes on some cases that were given to me decapped, and tumbled in corn cob media. (did not know about the corn cob at the time. It came from a good friend that had some fired brass, that he sized, cleaned, and then gifted. There was enough pressure to unseat the bullet, bu not enough to light the powder. It was only that one. All the rest went bang. I found the corn cob media grain in the unburned powder.