Like most of you, I don't know. Perhaps the gunwriters have been too busy hyping overbore .30 calibre monsters, or other larger bores of limited use. They also seem to have abandoned the Whelen in favor of the similar .338-06, which doesn't have the frontal area. I know five or six guys with Whelens, and they all love them. My brother in law took a record book grizzly with one shot from a Whelen.

When I had a medium bore built up, I opted for a .375-06 improved, which I build up on the .35 Whelen case. It is about as large a diameter that is efficient in the 06 case, and I really wanted something different. I get 2600 and change with a 260 grain partition and about 2400 with a 300 grain Hornady, but I doubt that is really any better than the 2600+ a buddy of mine gets with his Whelen and 250 grain bullets.

Probably the lack of hype from gunwriters. While they haven't been unkind to the Whelen, neither have they said much about it.