Snyper: As with virtually all overly broad statements/contentions yours (yours: "No one has ever designed a reliable [spelling corrected] semi auto 22 Mag") is wrong also.
As evidenced by this one example: the Volquartsen semi-autos in 22 Magnum!
I have seen a number of these work "reliably" over the years!
Hold into the wind
VarmintGuy
Don't forget Magnum Research.
https://www.magnumresearch.com/Firearms/Magnum-Research-22WMR-Hogue-OverMolded-Rifle.aspOr that Hechler and Koch had a 22 Magnum 30 years ago. Very costly (at the time) though.
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=430215597Also the Remington 597.
CZ 512.
http://cz-usa.com/product/cz-512-22-lr-semi-automatic5-rd-mag/ Not really that uncommon? Except in comparison to bolts, levers etc.