The Savage Model 99 in .358 Winchester (a .308 Win. necked up to .35 caliber) is not a plentiful rifle, but they are available if you look in the right places for one.
You'll pay somewhat of a premium for the .358, but not as much as for a Model 99 in .284 Winchester caliber. Expect to pay $100-$250 more for a .358 than you would for a .308 Winchester in the Model 99 Savage.
Naturally, recoil is up as is the bullet weights available in the .358 caliber compared to the .308 Winchester, but for those who mix elk, caribou, moose and black bear with their menu of venison, the .358 Winchester is an excellent choice.
I've never figured out why the .358 Winchester hasn't achieved more popularity than it has since it is an excellent caliber for almost any New World big game with the possible exception of the "big bears".
But at ranges less than 100 yards, even the big bears can be considered as "fair game" using the .358's heavier bullets.
However, before you rush out to purchase a Model 99 in .358 Winchester, you should determine whether or not you really need that larger caliber. If your hunting is limited to mostly deer with an elk or moose occasionally on the menu, then a .308 or even a .300 Savage caliber might be a better solution for you... and the recoil would be noticeably less in those two calibers than in the .358 caliber and the cost would be less as well.
Strength & Honor...
Ron T.