Noted Whitetail biologist Dr. James C. Kroll sets the criteria thus:
1-A bullet weighting at least 140 grains.
2-Velocity approx. 3,000 fps.
He considers the 257 marginal but acceptible.
I believe he uses a 7 mm magnum, 140 gr. bullet.
Dr. James C. Kroll does not know his ass from a hole in the ground.
If that is the criteria, I don't have a whitetail rifle. Even rifles like my 338 Federal and 9.3x62 won't kill deer since they don't meet the 3,000 fps requirement. I guess it's time to buy a magnum.
I'm sure this news will come as a great relief to the hundreds of millions of whitetails who mistakenly thought they were dead after being shot with .30-30s, .32 Specials, .300 savages, .35 Remingtons, .303s, Krags......well, you get the picture.
The doc are an ass, I am thinkin'