TOM- between me and my SIL, we have wide range ( and store) of components. Heck, I still have some primers I bought back during the "Great Clinton Primer Scare" of the 90s! ha. Another advantage, and one which I've used through the years, is 2 rifles of the same caliber, wildcat or not. I never "lost my ammo", etc but the closest I ever came to it, was a local hunt ( about 100 miles away) for doe antelope. I took a wildcat 6mm/284 and 13rds of ammo. I let a friend talk me into trying shoot one over 500yds away, with us sitting on a high bluff looking down into the valley/prairies floor. The wind was making a big ventura, and I shot over, under, sideways, but never wounded the poor thing. I then missed another, and was down to 8rds. I knew if I wounded one I was going to have to chase her over the prairie to finish her, so I made a chip shot on one and went home. No way I could drive into town and just buy a box of ammo, ha.
