RE: .270 question
The three years I spent in Alaska, I hunted mostly with two rifles - one a Mannlicher-Schoenauer carbine in .270 (20" barrel), and a Model 70 Super Grade in .375 H&H. For some reason, (I believe St, Hubert had something to do with it), every time I saw game, I was carrying my .270, loaded with 150-grain Nosler Partition bullets at a MV of 2850 FPS from the 20" tube. I killed everything in Alaska with that rifle, excluding Kodiak and Polar bears. However, when I was living in Fairbanks, there was a doctor's wife there who killed an 11' Polar bear (pre-Endangered Species Act) with her .270 M 70 Win., also using a handload with the 150-grain Nosler.
When I returned to the lower 48, I switched to 130 grain Nosler Partitions at 2950 from that same short barrel.
There is NOTHING in the continent of North America that you can't kill with a .270, if you use the right bullets and don't shoot them in the kneecap!!