Ring height for 7600

[3030guy]

Took the new 7600 in 270 to the range today for sighting in. I was using a Leupold VXIII (I think!), it has a 40mm objective lens. I mounted it with Weaver "low" rings and found that the shots were hitting about a 18 inches low at 25 yards. I moved the horizontal up as far as it goes, but could only get it to move up about 10 inches. I'm going to mount higher rings but before making the purchase, can anyone recommend a height that will work? I believe Weaver makes them in medium, high, and extra high.
 

[oneoldsap]

                  If it's a later 7600 with the raised comb stock mediums should work with a 40mm objective ! A little clearence is a good thing , for caps and such ! With that being said , if your scope wasn't touching the barrel  , that's not the problem !

[3030guy]

                  If it's a later 7600 with the raised comb stock mediums should work with a 40mm objective ! A little clearence is a good thing , for caps and such ! With that being said , if your scope wasn't touching the barrel  , that's not the problem !

Ok, just went down and checked to see if I mounted the scope sideways.    Nope, it's on correctly. It's not touching the barrel, so what else should I look for?
 

[victorcharlie]

From Leupolds web site:

Elevation issues can be resolved by shimming (we will send shims free of charge if you would like). If more up adjustment is required, the rear of the base needs to be shimmed between the receiver and the base. If you need more down adjustment, the front base needs to be shimmed. In making this adjustment it should be noted each 0.001" thickness of shim equates to approximately 1-MOA (1 inch at 100 yards) correction. Shimming does not induce stress on the scope, but typically reduces stress by properly leveling the scope to be parallel with the receiver.

http://www.leupold.com/corporate/resources/faqs/#MyScopeIsRunningOutOfInternalAdjustment

[bcraig]

Hi,First check to make sure the base screws and the ring screws are snug,then you could use a scope that you know for a fact works properly and mount it and see if you still have the same problem.
Next is the fact that you said you thought it was a vxIII ? you should be able to tell by looking and see if in fact it is even a leupold and if so what model.If in fact it is a Leupold then you can send it to them and they will repair it for free.

I reread your post and unless I am reading it wrong you say you adjusted the horizontal as much as you could and it moved it UP only 10 inches which suprises me because  you adjusted the Horizontal(WINDAGE or left and right)instead of the vertical(UP AND DOWN ) it should not have moved up at all. If you want to move the bullet either up or down on the target then use the elevation adjustment,which should be the adjustment on the top of the scope and not the side.

[oneoldsap]

                     You should look for someone who enjoys a smart ass retort , when they are trying to help a fellow shooter out  !  Sin Loy !

[bcraig]

Where is the smart ... retort ? and by who ?

[3030guy]

Hi,First check to make sure the base screws and the ring screws are snug,then you could use a scope that you know for a fact works properly and mount it and see if you still have the same problem.
Next is the fact that you said you thought it was a vxIII ? you should be able to tell by looking and see if in fact it is even a leupold and if so what model.If in fact it is a Leupold then you can send it to them and they will repair it for free.

I reread your post and unless I am reading it wrong you say you adjusted the horizontal as much as you could and it moved it UP only 10 inches which suprises me because  you adjusted the Horizontal(WINDAGE or left and right)instead of the vertical(UP AND DOWN ) it should not have moved up at all. If you want to move the bullet either up or down on the target then use the elevation adjustment,which should be the adjustment on the top of the scope and not the side.

It's a Leupold, I just can't remember the model. I know what you're saying, I'm just not sure of the correct terminology. I adjusted the "up" dial to adjust the horizontal wire in the crosshair.
I'm going to try a different scope and see what happens, then shim if needed. Thanks for the help!

[NYH1]

From Leupolds web site:

Elevation issues can be resolved by shimming (we will send shims free of charge if you would like). If more up adjustment is required, the rear of the base needs to be shimmed between the receiver and the base. If you need more down adjustment, the front base needs to be shimmed. In making this adjustment it should be noted each 0.001" thickness of shim equates to approximately 1-MOA (1 inch at 100 yards) correction. Shimming does not induce stress on the scope, but typically reduces stress by properly leveling the scope to be parallel with the receiver.

http://www.leupold.com/corporate/resources/faqs/#MyScopeIsRunningOutOfInternalAdjustment

vic, I'm in the same boat as 3030guy.  My 7600 Carbine is shooting about 7 inches low at 50 yards with the scopes elevation up all the way.  I didn't bother shooting at 100 yards.  If it's shooting low, wouldn't you want to put the shim(s) under the front of mount to raise the front of the scope up? 

[zoner]

victorcharlie is right,you need to shim(raise)the rear of the scope base. It works just like a rear sight

[parkergunshop]

Ok,
Weaver rings mount on scope bases, Weaver scope bases are made for many different rifles.The 7600 uses a different  base #93 than the #62 the old 760 rifles use are you sure that you have the correct base?  This means that the contour of the receivers for the 7600 is somewhat different than the 760 since weaver lists a newer base with a different number for the 7600 and 7400 series.

[Dave in WV]

Since you have a Weaver style base buy some Burris medium Signature Zee rings and an offset inset kit (three different inserts and amounts of offset).  I have them on my 7600 and they work great. You have to do a trail and error to get the right amount of offset to correct your problem. I bought an inexpensive laser bore sighter and got the windage and elevation close to a zero with no scope adjustments before shooting the rifle to zero it @ 100 yards.
Here's a picture of my setup. I have a Warne one piece base.

[NYH1]

victorcharlie is right,you need to shim(raise)the rear of the scope base. It works just like a rear sight

Yep.  I made a shim and put it under the rear of my one piece mount and it's works perfect!