Knock on wood,,, I've been reloading on the star for many many years and have never had a double charge of powder or no charge of powder, but I attribute that to being extremly cautious, and if a problem developes on the machine causeing an interruption then I simply make sure everything is right before continueing. this device may be useful to help get started after an interruption but would be a pain to use for every round. I manually check useing a sheetrock nail to check for powder on re-starts. but everyone to his own !!
Lindy