Well i confess to trying that with subs. The result is every rifle i put away without cleaning, or loaded without cleaning, and left loaded, has rusted. In my mind BH209 is a wonderful sub, but i don't leave fired rifles uncleaned anymore. Whenever i am hunting and fire a shot, i immediately reload. Used to be i would leave the rifle loaded without worry; no longer. My reloaded rifles get fired at the end of the day, and cleaned.

If smokeless powder was legal for muzzy hunting here, i would use it, maybe.