[Buckskinner]

Trying to mount an older Zeiss Diavari C 3-9x42 (really nice telescope!) on a Ruger M77 "tang" .30-'06. Actually would like to be able to mount on a Win. Mod. 70 too. Its a shorter than average tube, so it doesn't fit with normal rings.

What rings for the Ruger and Mod.70 can help mount this shorter tube scope?

I've tried Burris Extension rings, but that exacerbated the issue by making the distance between rings greater.

[CB900F]

Buckskinner;

I suspect that the extension base(s) can be reversed without affecting the proper functioning of the rifle. Usually the front base overhanging the ejection port will not matter at all in the loading or ejection of spent brass. All I can say is try it & see what happens.

Or, you could go to the Zeiss conquest line. I recently mounted a 3.5-10X conquest on a magnum actioned Tikka with no problems. If that works, send that nasty old Diavari to me & I'll find a way to put it on somethin'.

:evil: 900F

[JohnKSa]

http://www.ruger.com/Firearms/FAAccView?acc=1006%0A%09%09%09%09%09&facat=M77RSEXP%20MKII,%20M77RSM%20MKII%20(Blued)&side=Scopes&type=Rifle&RI=Yhttp://www.ruger.com/Firearms/images/Accessories/1006L.gif
http://www.ruger.com/Firearms/FAAccView?acc=1032%0A%09%09%09%09%09&facat=K77/44RSP%20(Stainless)&side=Scopes&type=Rifle&RI=Yhttp://www.ruger.com/Firearms/images/Accessories/1032L.gif

[Buckskinner]

The pics show that there are two things preventing either reversing front ring to back ring, or just turning the extended ring 180 degrees:

Notice how the rear ring is higher than the front? They can't be reversed...

Notice how each ring has that small radiused piece on the underside? This fits into a milled slot on the reciever. It is on the rear of the ring, so it cannot be turned 180 degrees...

Brownell's techs couldn't help either, but I recently saw a custom rifle with a short tube scope, and the front ring was extended aft from center of the base.

I'd prefer to stay away from custom, but for the Ruger it may be pie in the sky.

How about the Model 70 using Leupold bases? Or what better bases are out there that would work for the short tube?

[JohnKSa]

Option 1: If you look at the pics, there are two different heights. Are you sure you can't use a tall front with a short rear and then reverse them? Might be worth a call to Ruger. They have a pretty decent variety of these rings in various heights to fit revolvers, various rifles, a variety of scopes, etc. I'm betting there's a combination that will work for you.

Option 2: File off the small downward projection on the front ring so you can reverse it. On a 30-06 with a light scope, I would think the remaining screw clamps would hold things in place nicely especially since you have left the rear ring complete.

Option 3. File off the downward projection on the front ring. Have someone put a welding bead on the other side and file/dremel it to shape so you can still have your downward projection mating with the receiver cutout but with the front ring reversed.

[steveno]

I think ruger still has extension rings as I have some on a #1. I don't know if they are offered for a 77 because of the different heights that are required. a #1 uses equal height rings. check the ruger website

[steveno]

I just got to thinking that will an extension on the base interfere with loading the magazine?

[Harry Tuttle]

my M77 tang safety has a cantilever base on the rear that hangs over the port ~1 inch