I could not imagine not loading my own for dangerous game or any other hunting for that matter..375 Ruger is superior in every way to .375 H&H. Rifle and ammo availability is excellent now.
.375 H&H has the value of nostalgia and is also readily available,
I don't recommending reloading for DG.
I think a 375hh vs ruger debate is about the same as a 300wm vs 300prc debate. Not much differnce in either cartridge.
I went with a 375HH for ammo availability, reloading components and nostalgia