Some H&H owners just dream of ancient missed opportunities on shady ladies while cradling a plastic Potters bottle, then go hunt all manner of toothy and horned things in the morning around the world. Also a questionable fact that .375 H&H owners spend around ~79% less time in gun shops, and ~84% less time leaning on counters, than .375 Ruger users.
...but... the .375 H&H is
also put in a standard length action and of the mainstream production .375s only Ruger and CZ put it in a larger action, and only one of those larger actions is left. Remington, Winchester, Sako, Zastava, Browning, Mauser, Howa, even Savage...

Often the only difference is a mag box and follower, that make no difference in the bolt throw length.
The .375 Ruger's principle claim to fame has been amusing .375 H&H owners, and even folks who just know what it is, since 2007.

.375 H&H has been in standard actions since 1912, but somehow the note was missed when the Ruger came out with that aspect as a "benefit".