I went with the 375 Ruger for a couple of reasons.
First, it is available in a easy to find controlled feed left handed action, the Ruger Hawkeye African.
Second was I liked the feel of the rifle and looks. The barrel band and walnut stick with cross bolt has the look.
Finding ammo has not been a problem, my local gun store either has it in stock or can order what I need or I can order it online.
Safari Outdoor in Jo’burg had 375 Ruger in stock.
I have not had any issues with the stock splitting or ammo sticking.
3 of the guys going with me in June 2025 are also carrying 375 Rugers.
2 have the Guide gun and one has the African.
Definitely not Africa, but the Ruger Alaskan rifles in 375 & 416 Ruger are favorites.
I appreciate the history of the 375 H&H. Have several. But, the little Ruger rifles and cartridges have become my users, here in Alaska.
Ballistically, probably not 2 cents usable realistically difference between the 375 Ruger & H&H, nor the 416 Ruger and Remington. No complaints about accuracy of any.
Not that it is a mountain shaking difference, I like the shorter bolt throw of the Ruger cartridges.
As to brass sticking, the only 2 times that has occurred, was in 2 different 416 Ruger rifles. Which both had very slight chamber flaws. Both required a little chamber polishing.
The 375 Ruger, I use published data (though a longer COAL) with 270 grain TTSX for ~ 2720 fps out of 20" barrel
The 416 Ruger, non-published data for ~ 2520 fps with 350 grain TTSX. Never an issue with brass, primers, extraction. I have shot one load to ~2560 without issue. Backed down, because 2500 was my original goal for this bullet.
I have had rifles in the 375 Ruger since shortly after its introduction. I still have a first production run blued/walnut. I prefer the 20" stainless model s for my hunting. Though do have a 23.5" stainless that I had an aftermarket barrel install and other work. Great rifle, but I like the 20" factory barrels just fine, and prefer to use the shorter.