375 H&H vs 375 Ruger
I am a Ruger fan and own a dozen or more of their handguns, shotguns, and small caliber rifles. Here's the problem with the 375 Ruger cartridge. I bought a 375 Ruger magnum to take to Mozambique to hunt Cape Buffalo. You're only allowed to bring 40 rounds per caliber into Mozambique. If your ammo is lost or stolen in the miserable trip to get there you are out of luck. No way that you can get replacement ammo for that caliber.
I sold it without even firing it and bought a CZ 550 375 H&H Safari Magnum instead. When I got to the Mungari Camp there were 6 PHs for the six hunters. Four owned CZ 550s in 375, one had a 416 Rigby, and the other a 458 Lott. I could have easily gotten replacment 375 H&H ammo in the camp from any of the PHs. Theres no Cabelas in Mozambique or Namibia or South Africa where I have hunted.
The CZ was great and I took the buffalo, Nyala, Sable, Litchenstein Hartebeast (at 278 yards), Bushbuck, Warthog, and Red Duiker with it. Great rifle for the money and controlled feed.