30-30 Winchester, 220 gr round nose, 1.6cc trail boss. For single feed use obviously, didn't tried them in a lever rifle. Subsonic and mostly for having fun with a suppressor. On the upper limit of hearing safe with a K length 30 cal rifle can. Berry's 220gr plated for the 300blackout would be a more cost effective solution.

Bullet seated backwards to help trail boss fill the case. Trail Boss please come back.