Hillbilly,
The case capacity of the Ruger comes from being designed FAT, and square of shoulder, and the 375 H&H Long and tapered. The end result is they are very close to each other in case capacity for all practical purposes...but even a 100 FPS will not have any practical effect on their intended purpose..

I think you have made and excellent choice and I also believe the Rugers are the coming classic of big game calibers, they are well designed, they have more than enough punch to handle all that walks, talks, or crawls on this planet..Good hunting to you! smile I, on the other hand, have about 2000 rounds of loaded a 375 H&H, bullets and brass in abundance, dies, and a wonderfull old English rifle with load work and everything already done..It would not behove me to change now, but you never know, I have a tendency to get bored with rifles and peddle them for no other reason than to start all over! smile