I've taken all the game you listed with the.270 and more. I soon went to the .338WM for moose, elk .bear ,etc . The .270 shines for deer sized game. Very flat shooting, hard hitting and mild recoil as we heard before...... the cartridge that all flat shooting cartridges were compared to since 1923.Never owned a 270 Winchester. Started with a 30-06 and also had a 280 Remington. I've taken WT deer, Black Bear, Antelope, Caribou and has both of these rifles as back up rifles on various hunts, they work.
Jack O'Connor praised the 270 Win with his writings, I studied them as a kid growing up. The 270 is capable of taking any game in NA with the right bullet. I favored the 7mm and 308 calibers because of the vast range of bullets. Much better than the 277 offerings. Higher BC bullets in these offerings can shoot reasonably flat and carry more energy way out there.
Brinky72 brought his 270 Win over and we water jugged a 130 gr Power Point and a 150 gr PT.
Both were perfect mushrooms and the 150 gr I almost penetrated into tomorrow.
So why the 270 Winchester?