Availability is why I've gone with a narrow caliber spectrum, with a few exceptions. Mostly .223/5.56 and 9mm. That doesn't help right now, but I stocked up pretty good when 9mm reman could be had in bulk and IN BRASS for 15 cents a round and the AR 5.56 rounds were as low as .23. 300BLK was NEVER cheap, but as a novelty I've found it to be an astoundingly accurate and devastating boolet. My huntin' rifle rounds, .243 & 30-06 are getting rare now too, though. Those are the ones I have no more than a couple hundred rounds.
There is NO shortage of shotgun shells here...Dunno about the defensive rounds, as double-ought is defensive enough for me....
There is NO shortage of shotgun shells here...Dunno about the defensive rounds, as double-ought is defensive enough for me....