I have killed 4 elk with my .280 Remington loaded with Remington 175 gr Cor-Lokt,, 160 grain Speer Grand Slams (two elk) and 160 grain Nosler Partition. All were loaded around 2,800 fps. The 175 was loaded before I understood pressure signs, and it was severely overloaded. All four of these elk died instantly and never took a step. Shots were between 113 and 375 yards. I'm very sure a 7x57 similarly loaded would have given very similar results.
