Most lead ore mined in the US was exported for smelting before this. And lead is the #1 recycled metal. (Think car batteries). One old car battery probably contains enough lead for a lifetime supply of .22LR bullets.
There is plenty of lead ore around, plenty of countries willing to do the smelting, and plenty of old batteries. So I doubt I'll run out of ammo before they throw dirt on top of me.
Don’t melt old car batteries, they mix stuff in that screws up the casting and is more toxic than the lead.
I’ve considered ordering bulk ingots and just storing them in the barn, not like they will spoil.