[Jotmo]

I’ve yet to hear a good explanation for why Rim-fire ammo has been so scarce.

[marktwain]

Demand outstripped supply.

Manufacturers were reluctant to buy expensive new plant, thinking the bubble would burst.

Demand has stayed high, manufacturers increased capacity by about 20%.

[Axenolith]

Recall that not only was there a run on it, but a huge increase in conversions and kits to allow heavier caliber weapons to fire .22 for plinking and practice. People that might put one or two hundred rounds every few months through an AR or .45 ACP due to cost can do the same every weekend with .22 uppers and slides.

[Blood of Tyrants]

Hoarding.