Yeah. News reports call such things arsenals. I shoot enough. 22 that I get in a shopping mood if I only have 5000 rounds. Not to mention at least 1000 of my pistol or rifle rounds. Just practicing uses up a 50-200 rounds. They get upset we can own guns without training but if you have enough ammo to use in training they get upset.
I certainly hope I never have my collection get down to twice what was found, if it does I will be calling the police and the ATF as someone just robbed me!