"J. C. Higgins" was a brand name Sears used for its sporting goods before it started using "Ted Williams". http://www.searsarchives.com/brands/jchiggins.htm . The firearms were actually made by a number of different manufacturers. The 30 583.70 may have been made by Hi Standard, no longer in business. http://www.gun-data.com/J_C_Higgins%20_firearms.html it this checks out, then take a look at Numrich for old parts http://www.e-gunparts.com/dept.asp . If the rifle has a standard grooved receiver for a .22 scope, you can get the scope and/or mounts just about anywhere. Try Wal*Mart or look at Midway http://www.midwayusa.com/
50's or so
I am not familiar with this particular model (427) but I am familiar with Benjamin air rifle. If your problem is that there is on Scope rail to mount your scope then I know how to fix it. Crosman airguns owns Benjamin air guns. Crosman offers a special Benjamin barrel clamp that lets you mount a scope to it. See the link below
Try these websites ......WWW.cheaperthandirt.com.......WWW.gunsamerican.com
You need to talk to a gunsmith.
This would be very difficult as the Springfield Model 15 .22 caliber rifle is already an antique. Try the Burris 3 - 9 x 40 scope and hopefully there will be enough room for the holes to mount.
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.
The scope mount for the Remington Model 750 is regularly sold at GunBroker.com.
weaver was the vender but the model was sold as JC Higgins it was a 4 power scope known as JC Higgins marksman both the scope and the mount were unique to the model 31 rifle 583 75 was Made by High Standard manufacturing in 1952 Both the rifle and scope were sold only by Sears & Roebuck and exclusive to them only I see the scope for sale all the time on Ebay they average about 15 to 25 bucks .If you by one make sure it works and that it has it scope mount
Scope mounts that mount on the left side of the receiver using the four screw holes are available from Weaver.
what is the scope mount for savage 325 c
Gun shop, gun show, want ad, pawn shop
Best left to a good gunsmith.