Back in the late 50s one of my father's friends bought a Remington pump in 257R. He took it up into Canada and shot everything with it, moose, Brown bear, I believe even a walrus. I saw him shoot a large sea lion in the water and it was a head shot, pulled that seal completely out of the water and back 6-7 feet. A remarkable cartridge. My close friend has two mod 70s pre 64s in 30-06 NIB one regular one featherweight. Bought them new and just put them away.