Assuming that your scope is a 3x9x40 scope,then medium height rings will do the job.If it is a 3x9x50mm scope,then you will need a set of high scope rings.
Being that the obj.is 50mm,I would put on a pair of 1in.high rings.
You will have to have a trained and competant gunsmith drill and tap your receiver for a set of rings and bases to mount a scope on your savage.
You need a Weaver Side Mount #2 (which is the base). Weaver also make 1" side mount rings that mount onto this base. That's what I have on my .222 Savage 340.
I'd start with Amazon. Your rifle is a Savage model 340, and if you search for Savage 340 scope mount, you will get a lot of hits. The mount and a set of rings is about $53.98. Shoot safe and often.
Just about any rings and mounts made by Weaver will fit nicely. Using lesser quality rings will cause the scope to go out of adjustment when the shotgun is fired.
Numrich Gunparts. They are the only place I have found one for my 67. They sell one with scope rings and one with out. The website is: www.e-gunparts.com
You can find a scope mount for a Savage Springfield Model 840 .30-30 rifle at various gun shops, sporting goods stores, or online retailers specializing in firearm accessories. It is important to ensure that the scope mount is compatible with the specific model of your rifle to ensure proper fit and function. Additionally, consider factors such as material, design, and mounting style when selecting a scope mount for optimal performance.
Mount Doom is in Mordor.
you need a rail for a LA 110. Midways got it. You need to know if you have a real flat reciever or round.
Orodruin .
Have you tried going to http://www.remington.com? The sell it, so they should be able to assist you.
You can get a base (or bases) that will attach directly to the top of the receiver. Then the rings mount to the base. Pretty standard scope mounting process.