Now, let me clarify, the marlin mod 60 is the best way to go, but remember, they made about 100 variants of the mod 60 , in semi auto, that are also mag fed, the ; 70, 75, 75c, 795, 99,989, 99m1, 7000, etc. any, and I mean any of these, will be more accurate, and more reliable than a ruger 10.22. Also, you cannot go wrong with the Savage 64, heck the magazine alone can be thrown at people as a weapon!!!
Now most of those mag fed marlins will be used, as they are not made any more, so you would have to find them at gunshops or shows, but have no fear in buying them used, they will still be very good.
Now, lets get down to business, the best overall semiauto ever made, proly was the remmy speedmaster. it is tube fed, but with it's cool floating chamber sdesign, you can fire short, long, longrifle, interchangeably, even in the same tube. new they are 300, a bdl version will be 400, but you can find these used for 150 plus. I have also found, that out of all the factory 22 rifles I have ever fired, especially among semiautos, this is the only one that fires the massive Aguila 60 grain sniper subsonic round, both accurately , and without keyholing, and also feeding reliably.
And this coming from a dude, who does have a modded 10.22, that is reliable and accurate.