Marlin 39AS problem

[TX50Cal]

I have a Marlin 39AS that I have owned for a couple of years. I don't get to shoot it much so took it out today. I hada Redfield 3-9X scope on it that I thought had problems. I had the left/right turned as far as it would go and it still shot left. I replaced the scope today with a Simmons Aetec 2.5-10 that I had laying around. Tried to sight it in and had to screw the adjustments as far as it would go to move the bullet impact up and it still shot low. Anything I should look at? I measured the scope mount holes on the top to see if they were maybe drilled crooked but they seem straight. Without the scope It shot fine. I really want to scope this gun but I don't know what else to do. Thanks for any info.
Dave in TX

[jdad]

1. Internals on the Refield could be gunked up or sticky.
2. Burris Signature Z rings, with the correct combination of inserts, will solve your elevation problems. Remember you're putting a centerfire scope on a rimfire.

[Washita]

Have you tried reversing the rings, i.e., exchanging them front-to-back & vice versa? Sometimes this helps, or so I've heard.

[Buffboy]

Jdad has a point, but there is another consideration, Parallax. I've seen quite a few centerfire scopes that would NOT zero on a 22 because the standard setting for parallax on a centerfire scope is 100yards. Shooting at close hunting ranges doesn't matter as much in a big game scenario so it usually doesn't show up with them but can when sighting in a closer ranges. Shooting at closer ranges like 50 or (much) worse 25 yards with a 22 with one of these scopes sometimes has so much variation that they didn't have enough adjustment to zero. Not that that would matter much, a little different cheek weld would change POI again anyway. Get a 22 scope or one of those airgun scopes that have adjustable parallax and I'll bet your problem will be solved.

[jdad]

This is probably the best all around rimfire scope, for the money, with an AO.

http://www.theopticzone.com/default.asp ... il&id=1440