Gunner:
Ihave the similar standard M-54 with a Griffin &Howe sidemount-Lyman Alaskan rig.
The little hornet was used to neck shot on a white tail decades ago.
It came to me from the same uncle. Family rifle. I use 45 gr SPs with a Lee rig.

The last coyote killed here was with a neck shot from a 450 Alaskan.
Before that, chest shot to one in a creek with an 1885 HiWall in 45-60.
He did'nt suffer.

"The credit belongs to the man who is actually in the arena-not the critic"-T. Roosevelt
There are no atheists in fox holes or in the open doors of a para's aircraft.....