I read all the posts and hope I didn't miss something but has Ruger sent you some brand new mags, not your old ones polished, to try. It seems there may have been a bad run of mag... feed lip problems I believe. So instead of sending in your gun maybe they could just send you new mags or go to a local store you trust and ask an older clerk if they can sell you one onf the newest mags they have recently received from Ruger.I bought a 10/22 lite target for my grandson we started shooting steel and I wanted him to have a good rim fire. Everybody was saying how good the 10/22's are but I must have bought the one that was made on Monday, right out of the box started jamming tried different ammo still jammed sent it back to Ruger they said it was the ruger mags. They said it was fixed and send it back well started jamming again sent it back they polished the mags said it was fixed and sent it back said to use high velocity ammo so I bought CCI stingers 7.99 for 50rds 1640 fps thought it was fixed we went to the completion and guest what had 5 jams. Will they refund my money and I'll buy something else?
I've been buying and selling and shooting Ruger 10-22's for maybe 39 years and have never had one that was bad from the factory, but I have had lots of bad 10-22 mags. In the old days there were instructions included on how to dissemble the magazines for cleaning and how to make the spring tension a little harder. I don't know if that is possible anymore but I mark all my mags and as soon as one starts to malfunction in a clean, lubed gun I try to clean it one time from the outside and wipe everything away. If that doesn't work I throw it away and replace it with a new one. I shoot a lot.