I wouldn't count on finding ammo out there at all.

I bought a 300 wsm rifle hoping it wouldn't be a big issue to find ammo. I'm realize it's way more hassle than I want to deal with. Maybe you can find some ammo but when you do will it be worth the premium some places put on it. When I found some ammo it wasn't worth the price since I just wanted to sight the rifle in. I did find some ammo for a decent price online but it was a sale on top of a discount. I doubt I'd see that regular. In fact most of the ammo I found on line was more expensive than similar calibers and shipping sent it way over the top. Especially when have the convenience of finding the other calibers locally on a more regular basis.

I'd rather do 300 wm, 30-06, or 308. In fact the only reason I still own the 300 wsm rifle is because I haven't decided what to get next.