Just fer Schitz n' giggles......
"When Steyr initially discussed the new round with Cooper, they intended to call it the .375 Steyr. Cooper said they should instead call it a .376, to avoid confusion with the .375 H&H Magnum."
https://en.wikipedia.org/wiki/.376_SteyrDisadvantage: I stand to be corrected, but to my knowledge, only Steyr chambers rifles for the 376 Steyr. I would suppose there are custom built rifles in that chambering.
Luv the Steyrs' for the SBS system, lock on safe, two stage trigger and accuracy. Plus they are so butt-ugly they are cool.
I am loading the Barnes 235 Gr. TSX in mine.
100 yds
200 yds..
I've perforated a number of hoglets with mine. A couple were hit a skosh back of intended POA/POI. They did not run far and left a blood trail a blind man could wade in.
Anywho,
I've owned several rifles chambered for the 9.3 x 62 cartridge. Sako, CZ, and Blaser.
It is one of my favorite cartridges.
I mainly hunt critters under 350 lbs. with mine, but have no doubt it would do just fine on larger critters.
I do believe that one can get say 100 to 150 fps. greater velocity with the Steyr, using the same 250 gr. bullet in each, however employing either, unless you hit bone, you can eat right up to the bullet hole at the velocities they travel.
The recoil of either will not knock you into next week.
If I were to have to choose, I'd recommend you go with the 9.3 x 62 due to the ease of acquisition of factory rifles and ammo. Factory 9.3 x 62 is readily available and you can neck up 30-06 brass if you're a reloader.
With the Steyr you will have to have a custom rifle built or attempt to find a Steyr Scout or Pro Hunter. Brass can also be hard to find and expensive.
Good luck with your quest.
Best,
GWB