ArmedBear
The .338-06 gives up maybe 100 fps to the WinMag, with a fair amount less powder, a regular case and chamber. .338 WinMag is the round that really doesn't make sense, objectively.
Hodgdon published reloading data give between 150 and 200 fps advantage to the 338 Win Mag over the 338-06 for various 225 and 250 gr. bullets (both 24" barrels)...not an huge difference but still more than irrelevant.....granted, I'm the one that disputed in the first place the usefulness of the super-duper new 338 compared to the 338 Win Mag....
But the difference is that, at the moment, that 150-200 fps disadvantage of the 338-06 comes at an actually
higher average ammo price and much less availability..the hyper 338s have an average 200-350 fps advantage (depending on the specific round, 338 Lapua, 338 RUM or 338-378) but with average ammo and rifle prices that can be as high as 3 times compared to a 338 Win Mag and much less availability as well....
The 338 WM hit just right, in price and performance.
Furthermore, no 300 grainers in 338-06 (as far as I know), which can give you much more flexibility...a 338 Win Mag with 300 gr. Woodleigh bullets has been proven to be an excellent African buffalo stopper (where legal).....
On the other side the new superboomer 338s cannot go higher (again, as far as I know) than 300 grains, like a regular 338 WM.
If the .338-06 were a mainstream cartridge, that wouldn't be true, though.
If i had blue eyes and be 6.5 tall I would be an Hollywood star....
Yes if it were a mainstream caliber and cost a bit less than the 338 WM with the same general availability it would be a good proposition in its own terms.
Unfortunately the situation, for various reasons, is this and this is the market we have to deal with....as it is, a 338-06 rifle, IMHO, makes very little sense unless you have very low tolerance to recoil.