Like I said, I wouldn't hesitate to use the .338-06 on brown bear. The .35 Whelen with 310 Woodleigh bullets, also hit really hard on bear. The 9.3 with Woodleigh bullets at 320 gr have exceptional penetration and very good penetration with bullets in 286 gr. Penetration isn't the sole criteria on bear. There is also the KO effect and that cannot be totally ignored with velocity. The 9.3 hits a bit harder with heavier bullets, then the .35 Whelen, and last the .338. I don't want to get into any debate with this, but larger cross sectional bore area bullets hit harder than smaller area ones. I agree that we have to use bullets of the same construction type for comparisons and some factors negate others. But overall the 9.3 generally hits a bit harder for stopping power over the others. Personally, like I said, I prefer the .338-06, but I don't expect it to hit harder than the .35 Whelen or 9.3. Actually, any discussion between them is like the differences between the .270 Win, .280 Rem, and 30-06. Not enough to really discuss as to effectiveness, just as to the type of hunting and majority type of game hunted. The .350 Rem Mag does have the ballistics of the Whelen, except for heavy bullets. These bullets have to be seated too deep in the powder column for magazine length that it actually does not do as well as the Whelen with them.
I'm not sure my experience totally agrees with you...
First off, the 350 RM i was using was a Ruger 77, same action i used for my initial testing of the .338-06
When i comes to brown bear, i think penetration is of the up most importance... I always try for a high shoulder shot, as i've already seen how far they can run from heart and lung shots...a long ways...and i was the guy that had to do the follow ups.
My criteria for the cartridge/bullet is that it expand well, and give max penetration... I want something that will break enough bone, and do enough damage inside so they are "anchored"...
The .338-06 with expanding bullets will shoot through a bear corner to corner, so how can Whelen do any better than that??? I mean i've shot several big browns myself and seen this with my own eyes, and i've also done follow up tracking and finishing for others, so i'm not guessing here...
From my experience, the Whelen isn't any better than the .338-06...
As for the 9.3x62.. I don't have one, but i've have both a double rifle and a combo in 9.3x74R. (same balistics as the 62) I also mfg and sold bonded core 9.3 bullets for a time, so i have shot a few 9.3 bullets too
My customers used my 9.3 bullets on game more than i did, and they were impressed with them. I have not tested the 9.3 side by side with the others, like i did the .33 and .35...
When it comes to a .33 or .35 cal. bullet on brown bears i don't care so much about KO, as it's penetration and the damage the bullet does that counts most.
In "this" case, it's more about the individual "bullet construction" than it is about the cartridge, and the only advantage the Whelen has over the .338-06 is that you can reload .357 pistol bullets in the Whelen.
I'll keep my .338-06, as i've seen over and over what it does on the biggest animals we have here in the US. Bur, if you have some first hand expierences comparing these two side by side in the field i'd love to hear it, as i'm not too old to learn something...
Anyway, happy shooting with what ever you choose to hunt with!
DM