I snatched a bunch of unjacketed lead 9mm rounds from Cabela's the other morning at a great deal without figuring there might be an issue. My cousin informed me that the Glock user manual says never to use unjacketed lead in stock Glock barrels. Can anyone elaborate on this one? My other 9mm is a S&W 5946. Does anyone know if the rounds will be a problem through that barrel also?