Scope Rings and Base for a 10/22

Is there a better set of a scope base other than the one that comes with the 10/22? These are the rings I'm using http://www.millettsights.com/rings-bases/detachable-aluminum-rings/
The top ones there. I'm thinking maybe I need a set of Millet bases instead of the one that came with the 10/22. I had this mounted years ago by a shop. They used these rings with those bases. For several years it worked great. It's been dropped, banged around, etc. However, a few months ago I loosened them to move the scope in them slightly. I re tightened them and put marks on the rings, scope, and bases to make sure none of it was moving. I've noticed these last few times I've shot it I've had a little trouble with it holding zero. The first time I shot it I figured out the screw on the stock was coming loose. When it was loose it would shoot about 3" higher than when it was tight. Once I figured this out and kept it tight it stayed zero. Then I went and shot it again and it shoot a couple inches high again. Once I adjust it I can shoot 500-1000 rounds through it and it will never move. I can even bang it around a little and it wont usually move. I thought I had it fixed and it's stayed sighted in fine again recently. However, I noticed when I was cleaning it that it's moved about 1/8th to 1/4th of an inch. This is the rings on the base. The scopes seems to have stayed put in the rings but the rings are slightly further forward than my marks I made.

So this has me thinking I probably need to get another base that this wont happen with. On most other guns I've seen the base has notches in it so the cross bolt screw from the rings goes through it and wont let them move forward or rearward. This base doesn't. It's just flat on top. So what base should I change to? Do I need to change rings too? Or am I fine with these? Or is the best solution here to just loosen them and re tighten them and lock tight everything again?

Your problem is fairly common to semi auto 22s using a 3/8" dovetail mounts. Older Ruger 10/22 where shipped with this style.

A number of years back (5 years or so) Ruger started shipping 10/22 with a Weaver style base mount. These have the slot for using the weaver style cross bolt to stop movement.

You can buy the factory base mounts from Ruger or places like Midway. They are fairly cheap. Use blue loc tight on the screws. You will also have to change your rings to a Weaver style rings of the correct height for your scope.

Another way is to us a Volquartsen 1 piece Picatinny style base mount. The advantage of this set up is greater latitude of scope placing. http://www.midwayusa.com/Search/#997346____-_1-2-4_8-16

or the leupold weaver mount for like 8 bucks.

The best rings I have ever had on a 10/22 are Talley rings (http://www.midwayusa.com/viewproduct/?productnumber=165404).

They cost a bit more but worth it IMHO. here's a set of Talley's with a Mueller 40mm APV.

http://i32.photobucket.com/albums/d37/madcratebuilder/102201-1.jpg

I think I got this problem fixed. Well, hopefully. I got a Weaver Tactical Style base and some Weaver rings. I did get aluminum as I just don't see spending that much on steel stuff for a .22 and I couldn't find a steel base like I wanted anyway.

This is the base I got
http://www.midwayusa.com/viewproduct/?productnumber=411014

I couldn't find the rings I got online but they look similar to these only they are the Weaver brand.
http://www.midwayusa.com/viewproduct/?productnumber=173923

Should that be a decent setup for a 10/22 or did I waste my money? I didn't want to have to order something so I wanted something I could get locally so I wouldn't have to wait. Then on top of that I just can't see spending $40 to $50 on rings so that's what I chose these.

After taking those old rings off I realized they are a pain like you guys said. I'm not even sure how the guy got them mounted correctly the first time. I'm thinking that when I loosened just the top screw to rotate the scope in them several months ago it might not have tightened down properly and that's why it moved on the base. I think I like this new setup better though.

Just so it doesn't look like this.
http://i32.photobucket.com/albums/d37/madcratebuilder/Bubba_scope_mount.jpg