ED45 Is there a reason for a 22mag as most quality .22lrs can out shotthem in group size even out to to 100 yards very well at 200. The 17hmr as better cartridge better than the 22mag for shooting groups. F J Fedderson builds a 10/22 based rifle at a good price that capable of sub moa groups at 100 yards and match grade .22lr ammo is closer to price of 22mag ammo. Just thought if not bought yet.
Heavier 22 rifle also are easler to shot well. liter carry better in the field.
I have 2 home built 10/22 customs and 2 savage bolt rifles in .22lr in the family that all are capable of atleast sub-MOA 100 yard groups.
Scopes
Mueller sell some very well liked scope in there apv line from the 4-16 to a 8-32.
I use a , don't laugh now , bsa 30mm 6-24 mil dot scope on 2 rifles and have been very pleased with them
Check out SWFA for other scopes like MUELLER
http://www.1022rifle.com/rifle-ruger
http://www.1022rifle.com/rifle-ruger