Not really going to be reloading for rimfire. And mag size issues in .22 rifles always interest me. Sure, a ten round mag seems small. But if it were 100, you still need to reload each and every round you fire...Takes little time to reload a ten rounder, and 10x the time to reload the 100 rounder. Not really an issue to my thinking.
.22s have been used by the US military.
The M22 rifle was a military trainer that mimicked the Springfield model 1903, and various braches of US Service have used .22 pistols in competition.
http://milpas.cc/rifles/ZFiles/Unite...eld%20M22.html
http://www.americanrifleman.org/arti...ry-model-b-us/