Well lets see
I have found 300 WSM ammunition at Walmart, K-Mart, Sportsmans Warehouse, Cabelas, Bass Pro, True Value and more.
I also have found now that between Winchester, Federal and Remington factory boxes are right at the same as the 300 WinMag and the other magnum calibers. If we are talking about the tiny store in somewhere a days drive away from anywhere, could be a problem but remember this, unless you are going to re-sight in your rifle, a 160 Nosler will shoot a whole lot different than a 180 grain Corelock. Also, thousands of hunters reload there own ammo, shooting much different than factory loads. Also the brands as well. Just saying, don't let this stop you from buying a fine caliber rifle like the .300 WSM. Someone said, pack boxes in a few different bags. I doubt anywhere you go these days, especially guided big dollar hunts, will not have a way of getting this if you forget. Also, this is what check lists are for, double and triple checking as well. I would never let ammunition rarity stop me from buying a dang good rifle. Just have to slow down, check and double check. I have a buddy who mails a box of ammo to locations where he goes that are quit remote and if he needs it, he has it close, if he does not need it, he donates it to wherever he mails it. Smart, cheap in the overall pictures. This goes for ANY rifle he brings as he reloads as well.
