What bubbacrabb said. Its still being manufactured, its just disappearing quickly. I'd proffer supplies will start improving in June.
1. Thats after multiple batches of resupply.
2. Some of the freakout will have passed. People will have moved on, and/or regular will have either passed or sputtered and died. Frankly I'm not seeing any serious legislation that would ban .22s.
It will be more expensive initially. Pircing will fall as demand slacks.