Did a "Night Salute" at a rondy, way up in a local canyon some years back, with this old crock...
For whatever reason, the donor powder was all FFFFG (Jade mining maybe ?)
Even with blank charges the recoil was formidable.
The reports? .......ear splitting sounds about right, and heard at a roadhouse in full Saturday night mayhem mode about 15 miles away ( the old steakhouse in Sonoita ).
Gotta love a nice flinter.