In the past, when I bought a firearm I didn't already have ammo for I'd just buy 4 cases of reloadable ammo for it. Except for 7.62x39, 7.62x54 and 9x18 which I don't bother reloading. My UPS guy used to hate me.
I no longer shoot as much as I used to so it looks like if/when I die in the next 10 years my brother will inherit a U-Haul truck loak of guns and ammo.
In thinking about this, I guess I need to get back into guns from my current interests in cannons, mortars and flare launchers.