Okay, so I will throw this out there and see what happens, good or bad. Just don't blast me for saying this, however I do believe its true. I just wanted to post this here because I'm interested in getting some help.
The most accurate 22 rimfire rifle I have ever seen perform consistently with a old cheap 4x scope has to be my Dad's J.C. Higgins Model 103.229. He told me it was the first gun he ever bought in 1958. It only cost him $25 with the scope. Still has all the original parts and scope on it, and has never failed to fire. I would be willing to put that gun up against any modern 22 rimfire rifle even a bolt action 22. It will put bullets through the same holes from the bench at 50 to 75 yards. It is truly a fine firearm in my opinion.
I am currently looking to upgrade the original scope on it to something newer but all the receiver mounts nowadays are 3/8in and this one is 1/2 or 12.7mm dovetail grooves. I am not about to tap the receiver or do anything like that would alter it from it's original condition. Anybody know where I can find some of these dovetail ring mounts.
Sorry to interject on the topic but I had to add my opinion and wanted some help.