To be clear, my issue with the Creedmore is not that there is anything wrong with it, it's that as a target rifle (with high BC, lighter weight bullets) it's not suitable for hunting, and as a hunting rifle with the higher weight bullets, it doesn't do anything a 6.5X55 doesn't do. So I can't wrap my mind around the marketing hype. It just strikes me as a nasty, flash, gimcrack thing that I don't need.
Full disclosure: my whitetail rifle is a 6.5X54. Now, as much as I love that rifle, it has its limitations. The 160 grain bullet is effective (on a lot of things) but its blunt nose not only means it drops quickly, but also loses velocity quickly. I "know" intellectually it can be effective on any of the Hochwild I hunted in Europe, but it does not meet the game laws in places like Germany or Poland that need 2,000 joules at 100 meters. The 140 grain bullets have a higher BC, and will do that, but I just haven't played with them enough. I'm playing with the 156 grain Oryx "just to see what I can do with it".
Honestly, I am not that recoil sensitive, so I rely on my .30-06 for most of the things the Creedmore can do. I mean, they were shooting 1,000 yard matches at Camp Perry with the '06 way before anyone thought of a Creedmore, and if that means I have to think a little more about elevation changes on the scope before firing, well, I'm not going to hunt at 1,000 yards, so why worry? Maximum Point Blank Range is a thing. As the guy said in Fast Times at Ridgemont High: "Learn it. Know it. Live it."
I've often said my ammunition choices include the .45 ACP (1911), 9X19 mm (1908), .30-06 (1906), 6.5X54 (1903) 9.5X57 (1910), and I'm starting to play with 7X57 (1892). I'm starting to consider a .300 H&H, but I'm really not sure I'm ready for anything as modern as 1925. If I'm going to get on the belted magnum bandwagon, maybe I should start with a .275 H&H Magnum first.
There's old school class for you: a traveller rifle with a .275 H&H for deerstalking, and a .375 barrel for everything else in the world. One receiver, two barrels. I need to look into that. But I think only Hawk Bullets and Woodleigh would make the appropriate .287" bullet. Maybe I'll just neck it down to .284" and call it good.