Its the same way about everything here...I actually found and bought .22 and .45 yesterday.
I think the box limits that most stores around here have put into place are starting to work. That way everybody has a chance instead of one guy buying a jillion rounds.
To bad that's not the case here in Kalifornia. I haven't seen .45 ACP on the shelves since 2012. Looks like I'll just have to go shoot the .22 magnum from now on.