But we're talking about whitetail deer here, not brown bear. People who've used the .35 Whelen (true of the .45-70 also) on deer have been disappointed -- it doesn't kill particularly quickly.
Not necessarily true. Where you hit them still matters. The last mule deer that I shot with my Whelen (225 gr partition) dropped straight down without taking a step. My guide said he'd never seen one go down so fast.
The last whitetail that I shot with my .257 Weatherby (100 gr. partition) went 10 ft. Which proves nothing except it is hard to generalize.