KBP, powder companies say it won't be safe. Do whatever you want.
Fire Moose, name one ammo company that tumbles or vibrates their assembled rounds to clean them, please. I ask 'cause I've never heard of one doing it.
US Navy Distinguished Marksman Badge 153
Former US Navy & Palma Rifle Team Member
NRA High Power Master & Long Range High Master
NRA Smallbore Prone Master