I agree with the sentiments about hand loading to get enough trigger time to be proficient with your rifle, REGARDLESS of the head stamp on the cartridge.
To the OP's question, I think the .300H&H chambering has been around long enough to not be called a fad... And, I intend to keep mine. I can load it down to 30/30 level, or, I can jack it up to be in the same ball park as most of today's commercial .30 caliber loudenboomers. Like the old saying: "What is old is new, and what is new is old..."
As I "thin the herd", I am gravitating toward the middle. The .223's and .243's are gone as well as the .375's. Currently down to a .270Win and .300H&H in hand. I figure light bullets in the .270 can do everything I did with the lighter chamberings. The .300 will be handy if I get an opportunity to chase bigger stuff. And working on a .30-06 build just because I am a rifle looney...
