Yeah, I agree with Bear Hunter.
Since we've kind of got off-track concerning the original context of this thread - now we're not so much talking about our personal hunting favorite(s), but talking about what we estimate is the most popular caliber among our fellow Alaskans - I haven't noticed a lot of tendency toward short magnums, either.
However, if there is such leaning toward short mags, it seems that it's the .270 rather than the .300 and that leaning tends to be among sheep hunters, for the most part. But there again, that's but a tiny fraction of the hunting populace in Alaska.
It is my belief that the .338 Winchester magnum is probably the most popular caliber among Alaska residents, followed by the .30-06. But, that's just a layman's estimation.
I don't think any local university has ever published a research project on the topic.
