Defective Scope? Mount off?

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  • danthemanx07

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    Went to Honey Island range Sunday to try to sight in a new .45-70 and scope combination. Rifle is CVA Stalker with a factory supplied Durasight mount. Scope is a Cabela's lever action 3x9. Everything is brand new. I started at 25 yds just to get on paper. Windage was dead on, but impact was maybe 12" or more low. Seemed a little much, but no problem, cranked up on elevation adjustment - don't recall now, but maybe 16-20 clicks. Fired again. Impact up maybe 1/2". A little puzzled, but I didn't see anything to do but continue upping the elevation. I repeated this process 3-4 more times. By the 5th shot I was still 6" or so below my aiming point. For sh*ts and giggles I took a shot at 100yds. Missed the entire target board completely. I didn't reach the end of the scope's available elevation adjustment, but I have to believe I was getting close.

    Am I doing something wrong, or is it possible that the scope or maybe the mount/rings are off somehow?

    Thanks.
     

    kz45

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    If you have 1/4 min knobs, and are an inch low at 25, you would need to put in 16 clicks up.

    So you're looking at 192 clicks up
     

    danthemanx07

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    If you have 1/4 min knobs, and are an inch low at 25, you would need to put in 16 clicks up.

    So you're looking at 192 clicks up

    Yes - 1/4 min knobs. 192 clicks? Is this "normal"? I have not sighted in a ton of scopes, but I have nothad one need that much adjustment.
     

    Barry J

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    The base or rings might need to be shimmed. Have you checked the number of clicks to see if you are near the midpoint in elevation?
     

    Barry J

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    12 inches low at 25 yards is 48 inches low at 100 yards. 48 inches low times 1/4 inch clicks is 192 clicks. That's a lot of clicks.
     

    DAVE_M

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    12 inches low at 25 yards is 48 inches low at 100 yards. 48 inches low times 1/4 inch clicks is 192 clicks. That's a lot of clicks.

    Most likely more than the scope can handle.

    Sounds like either you have the incorrect mount or your scope is FUBAR.
     

    Whitebread

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    Most likely more than the scope can handle.

    Sounds like either you have the incorrect mount or your scope is FUBAR.

    I'm with Dave if the scope needs 48moa (likely can't adjust that much) to zero something is wrong.

    Picture of the setup? Any attempt prior to shooting at bore sighting?
     

    Request Dust Off

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    Went to Honey Island range Sunday to try to sight in a new .45-70 and scope combination. Rifle is CVA Stalker with a factory supplied Durasight mount. Scope is a Cabela's lever action 3x9. Everything is brand new. I started at 25 yds just to get on paper. Windage was dead on, but impact was maybe 12" or more low. Seemed a little much, but no problem, cranked up on elevation adjustment - don't recall now, but maybe 16-20 clicks. Fired again. Impact up maybe 1/2". A little puzzled, but I didn't see anything to do but continue upping the elevation. I repeated this process 3-4 more times. By the 5th shot I was still 6" or so below my aiming point. For sh*ts and giggles I took a shot at 100yds. Missed the entire target board completely. I didn't reach the end of the scope's available elevation adjustment, but I have to believe I was getting close.

    Am I doing something wrong, or is it possible that the scope or maybe the mount/rings are off somehow?

    Thanks.

    Check to see if the mount has MOA built into it and is mounted backwards.
    That still would not explain the the scopes corrections being off.
    Are you sure it is a 1/4 MOA and not 1/8 MOA clicks
     

    DAVE_M

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    Check to see if the mount has MOA built into it and is mounted backwards.
    That still would not explain the the scopes corrections being off.
    Are you sure it is a 1/4 MOA and not 1/8 MOA clicks

    It's 1/4" adjustments:

    Windage/Elevation adjustment moves POI .25 inch at 100 yards

    The mount does not have MOA adjustments built in.

    Most likely it's a bad scope and the OP should return it to Cabela's or exchange it for another.
     

    danthemanx07

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    The base or rings might need to be shimmed. Have you checked the number of clicks to see if you are near the midpoint in elevation?

    The base should not require shimming. This model Durasight is made exactly for this rifle. Here is a link to the rifles. Mine is the .45-70 model close to the bottom. The sight comes with the rifle. Here is a link to the rifle with the mount. http://www.cva.com/CVA-store.php?shop=Centerfire%20Rifles%20&category=Stalker%20Rifles#l

    I have not checked the number of clicks to find the midpoint. I may give that shot this evening, but I am leaning more towards some of the comments from the other posters regarding the available number of clicks/MOA adjustment available.

    Most likely more than the scope can handle.

    Sounds like either you have the incorrect mount or your scope is FUBAR.

    Mount should be correct as it is purpose made for this rifle. Leaning towards the scope.

    I'm with Dave if the scope needs 48moa (likely can't adjust that much) to zero something is wrong.

    Picture of the setup? Any attempt prior to shooting at bore sighting?

    Dont have any pictures of the rifle handy, but it looks exactly like those linked above. I did attempt to bore sight but even at 25 yards you can see nearly the whole target board through the bore. I didnt find that very helpful. If my reading is correct, most scopes wouldn't have that much adjustment in any one direction. I doubt this scope is an exception.

    Sounds like I will be making a trip to Cabelas... Will be testing their product "guarantee" 'cause I am way out of the 90 day return policy period at this point.
     

    DAVE_M

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    Well you can eliminate the scope base by using another scope. If the alternate scope is spot on, then you know it's not the base.
     

    Whitebread

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    I did attempt to bore sight but even at 25 yards you can see nearly the whole target board through the bore. I didnt find that very helpful.

    Is that like a check engine joke?

    Return the the scope and pick up one of these. With that 45/70 running nearly $2 a round to best of my memory the kit will pay for itself. I would suggest a kit that does multiple calibers.
    https://www.midwayusa.com/boresighters/br?cid=11751
     

    danthemanx07

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    Well you can eliminate the scope base by using another scope. If the alternate scope is spot on, then you know it's not the base.

    Good thought. Might give that try this weekend.

    Is that like a check engine joke?

    Return the the scope and pick up one of these. With that 45/70 running nearly $2 a round to best of my memory the kit will pay for itself. I would suggest a kit that does multiple calibers.
    https://www.midwayusa.com/boresighters/br?cid=11751

    Ha - no wasn't meant to be a joke. Thought you meant actually looking down the bore as can be done with smaller caliber bolt actions. Actually - I have a Bushnell laser bore sight tool that I bought for this very task - only problem was I couldnt see the laser even at 25 yards. Maybe I will try one of the other types.
     

    kz45

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    its possible you received the scope with the crosshairs Not in the center! Look up the specs and see how much adj you have and put the crosshairs back in the center and try again
     

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