Mr. Watson:
yes, the gun was converted to .450 Nitro Express, and a stalking safety added.
Jack Huntington's gun, and work. That's Jack in the pictures shooting the gun.
He used it to kill a beefalo, around 2200 pounds, that felt like the truck they were in was a threat to his territory. Or, more likely, he was just flat out mean with a bad temper.
He was trying to gore the side of the truck, with good results. Jack managed to get out, get off one barrel. The Beefalo went down, hard. What they don't tell you, in his words, is the animal gets right back up. As it was doing that, he brained it with the other barrel. Dead Beefalo, alot of meat and butchering to be done.
The rifle was sold a while back.
The gun was pretty much regulated @ 50 yards. Jack did very little accuracy tuning.