This is a 4-Bore single-barrel rifle built on an Army Navy Supply frame by J.J. Perodeau of Enid Oklahoma. I am firing 1750 grain lead bullets over charges of 325gr of Goex Fg. Muzzle velocity is approximately 1340fps, generating about 7,000 ftlb of muzzle energy.
This is the largest rifle ever actually used for something other than just breaking records - these were employed as dangerous game rifles in Africa and India. Subscribe to the channel to be notified of my future videos, including the upcoming full-length video on the history of 4-Bore rifles (featuring Rodda and Holland & Holland double-barrel examples)!