Here are some unscientific observations of elk kills with both.
35 Whelen one cow elk at the shot the elk visibly rocked and staggered/died 20 yards later. I think the guy was using 225gr bullet of some type.
338-06
cow elk shot at approx 125 yards, visibly rocked and took off and lost in the herd and only made it 30-40 yards. 210gr NPt
cow elk shot 90 yards, DRT 210gr NPt
cow elk shot 175 yards, spun in a circle and tipped over. 210gr TSX
cow elk shot 40 yards, DRT. 210gr TSX
bull elk shot 275 yards, stumbled and fell within 5 yards. 210gr TSX
bull elk shot 170 yards, jumped took off with the herd peeled off and died 80 yards.
