If you are using corn media it can get stuck in the flash hole and be a problem. Each case gets the neck cleaned with a bronze brush. After the cases are cleaned, tumbled in your media, then and only then deprime inspecting each case for this problem. BTW, I ad, to my corn media, in a small amount of case polish. Case polish actually being Turtle Wax cleaning polish. Same stuff that you pay extra for at Midway for a much smaller bottle. $3.00 at Walmart for good old green Turtle Wax. I have been doing this for yrs. now with no found problems other than media has to be changed out more frequent. I do wipe all cases on a rough terry cloth towel for piece of mind after depriming and inspection for obstuction in the flash hole. Good luck and good shooting. MTG
