Picture this. You are on your way up to your hunt camp. You've been waiting to get back up there since you last left there a year ago. On your way up you realize "Oh crap! I forgot my ammo." and you are in some small no name town. They have a general store, and lucky you they sell some of the more popular CANADIAN hunting cartridges there. You saunter up to the old geezer(with the utmost respect) sitting on the chair and ask him for a box of 6.5X55 Sweedish Mauser. He looks at you with a blank stare. He then goes back to sitting on his chair.
Don't get me wrong. I love the 6.5 cartridge. It is a stroke of genius designing that cartridge. I even have a couple of old sweedish military rifles that will punch x-rings all day with the military iron sights. You just can't get ammo for it very readily. But I could be wrong. Mabye the small town you pass through on the way up to your camp has a wide variety of hunting ammo. Good luck.