The smaller gun stores in my area seem to be keeping their stocks up better. It is interesting to me to see what the big sporting good stores still have in inventory. Academy sports doesn't have anything except lots of 10 mm and some .22 mag.
This makes me think what it might be like if it were the food supply, instead of guns and ammo.
Also, you might try just using fmj, my pup eats anything I put in front of it.
Good luck with your search.