A 300 gr. bullet at 2700 FPS, a 260 or 270 at 3000FPS is pushing the string beyond belief IMO, or their chronograph is heywire or they have an over actitive imagination. I also expect their days of living on this side of the dirt are severaly limited! Yes, I know some folks that claim to load the 375 H&H to such velocities also.. I betcha brass doesn't last long. I would never load my .375 to those spects, to start with it means absolutly nothing in the field, so whats the point.
To say that one of these cartridges (9.3x62, 9.3x64, 375 H&H, 375 Ruger) is better than the other in the killing field or in trajectory is ridiculas and shows a lack of experience, they are all so close to equal that no-one could tell one iota of difference but I'm only baseing that on having used all but the .375 Ruger on DG at one time or the other. I have however built several .375 Rugers, done the load testing on them, and found it to be a wonderful cartridge but it is not the equivelent of the second coming as portrayed in some of these posts.
That's a pretty good reply there, Ray!
In my rather lengthy handloading experience (and more limited hunting experience) of .338 Win Mags, .340 Wby, .35 Whelens, and .375 H&H's, I'd probably agree that there wouldn't be much, if any, advantage of one over the other in North America, and perhaps little to none on African PG. So the issue is NOT which of these has some magic the others do not possess on soft-skinned game here or yonder.
However, since I have no experience on African DG, I'll resist the temptation to pontificate based on ballistics alone -- BUT, I can read, and have read, what pros like Ganyana and Dr. Robertson have had to say on such issues. In their EXPERIENCE, the 9.3 X 62 has been a personal favorite for anything up to and including Cape buffalo. Elephant? They basically concur that the 9.3 X 62 is as effective on elephant using solids as anything else, EXCEPT for a follow-up of a wounded ele in thick brush!
My choice today, for a medium, is the 9.3 X 62 loaded with either the 286 Nosler Partition at 2600+ fps or the 250 AB at 2700+ using RL-17 at about 64,000 psi. I've shot several black bears using both bullets. The 286 NP has the same momentum as a 250 NP from my former .340 Wby at 3000 fps. My 9.3 X 62 is a Tikka T3 Lite with a 22.5" barrel that comes in a 7.7 lbs with a 3 - 9 X 40 scope, sling and 4 cartridges. It's very handy as a walk-about and in a treestand. It will reach out with authority to 500 yards for ANY moose-size game.
If I were ever going to Africa again, it would be the only rifle I'd take. QL says it should shoot the 320gr Woodleigh at 2460 fps at just under 64,000 psi (same rifle in .338 Win Mag qualifies for 64, 000 psi). I'm happy that Ray can get 2500 fps from his using the 320 Woodleigh.
An Internet search has proven there are few places in Africa where the 9.3 X 62 isn't legal for any DG.
My current plans are to have some to try by this Spring.
Bob
www.bigbores.ca 
