the .375 H&H is a great hunting cartridge, the Ruger .375 is an INTERNET cartridge.
Okay, full stop...I want that on a bumper sticker!
Through a combination of bad luck, bad planning and bad airlines, I arrived in Africa without my duffel. I was able to make do with my carry-on, which contained all the essentials, but I had no ammo. A panic-stricken phone call to my outfitter followed, and he asked what the chambering of my gun was. I blurted out ".375". He paused briefly, and then asked ".375
what?", to which I responded "H&H, of course!". I could hear the relieved exhalation of breath over the phone. "No problem, we'll have some in camp." And they did, in two separate camps in two different countries, have an assortment of .375H&H ammo. Instead of firing one or two shots to check my zero as I would have done with my own ammo, I fired 4 or 5 to make the slight adjustments needed for the new ammo, and then went hunting. They didn't have the Ruger cartridge...I don't know if they had even
heard of the RUM.
Who gives a crap if they sell the Ruger ammo in the local store, or in the gunshop a hundred miles away? Do you really want to waste time,
any time, in Africa running around looking for it? They probably sell batteries, flashlights, slings and a hundred other things as well...do you leave those at home and then start searching for them in Africa?