I'm sorry if I offend the sensibilities of some members but I'm definitely a .270 Winch. man!
I love the 250-3000, a superbly balanced cartridge that requires a 10 " twist to get the most out of its capabilities.
The .338 is excellent, especially with us, continental hunters, on heavy game and although it isn't purely an US creation the .300H&H is my second favorite cartridge ... after the .270WCF.

DORLEAC
www.dorleac-dorleac.com