Well I use the heck out of my 338 Rum. Dont really know how the other three cals. work.
But I do know that the reason that I chose the 338 RUM over the 375 H&H is that .

1. Compare the ballistics of the two The 338 hits harder than Any of the 375 H&H bullets.
2. Have to compare the muz. vel. between the two. ( Granted the two ARE NOT the same .)But still blowing it out of the water at any distance you want to compare to.
3. I dont have to take the recoil of the 375 calibers.

Just something to look at.

And please be my guest . You can go to the Rem. web site and compare any of them.

hunter338

Aint that ONE funny Joke...