What's in your wallet?
 

Ammunition is hard to acquire at uninflated costs.

CCI still sells direct to the public but are backlogged,
but every now then they have ammo available with a 10 box (Brick) purchase limit. The shipping hurts but still far cheaper than other outlets.

They had 22LR in stock this morning ant I bought my brick.

Then Discover Card denied
I replied to the Discover fraud alert to clear and tried again
denied again

went to use a different card but by then all stock gone

Moral of the story - Discover seems to be difficult to use for ammo purchases, pick another card

If the sale didn't go through because Discover blocked your purchase of Ammo I would dump that card very quickly.

It might be a geographic thing if it's from a state you don't visit or is far away from home. I've had Discover shut off my card when I travel, it's usually just a phone call to get it turned back on.