i am extremely careful but things happen. was loading a large number of cases and a distraction caused me to skip a single case. i have a habit of looking into each case before i put the bullet on it to seat. i caught this one , luckily. now after charging all cases, i shine a small bright flashlight into the cases in the loading block row after row, and all goes well. even though i know everyone has powder, i find myself looking...ocd is a blessing and a curse.