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All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Topic started by: bmckennon on October 31, 2011, 09:00:21 PM

Title: Trouble with leapers scope adjustment.
Post by: bmckennon on October 31, 2011, 09:00:21 PM
Hi guys. I just put a leapers 6x24 scope 50mm lense on my Benji  Marauder 22 using leapers high scope rings. When I went to sight it in mounted screws to the left couldn't close maybe 4 in low and 3 in left. I turned the mounts around then I ran out of adjustment at about 2.5 in low and 1 in right. from what I can tell a medium mount is to close to use the scope. unless someone knows of a better fix. please Help.
Title: Re: Trouble with leapers scope adjustment.
Post by: MustangMike on October 31, 2011, 09:22:41 PM
benjamin makes a lot of rifles gotta tell us the exact one... also whats the objective lens size 32mm, 40mm, 44mm, 50mm ?
Title: Re: Trouble with leapers scope adjustment.
Post by: bmckennon on November 01, 2011, 12:17:16 PM
OH yah its a Benjamin Marauder 22 cal
Title: Re: Trouble with leapers scope adjustment.
Post by: bmckennon on November 01, 2011, 12:18:04 PM
the scope is 50mm 6x24
Title: Re: Trouble with leapers scope adjustment.
Post by: bmckennon on November 01, 2011, 03:02:46 PM
Hi guys. I just put a leapers 6x24 scope 50mm lense on my Benji  Marauder 22 using leapers high scope rings. When I went to sight it in mounted screws to the left couldn't close maybe 4 in low and 3 in left. I turned the mounts around then I ran out of adjustment at about 2.5 in low and 1 in right. from what I can tell a medium mount is to close to use the scope. unless someone knows of a better fix. please Help.

Ok sorry to bother I discovered that if, I put the lugs on opposite sides of the gun then it was on correctly, the only issue is that the front ring bolts must be on the shooters left side while aiming the gun. Add air and all is well.

Title: Re: Trouble with leapers scope adjustment.
Post by: MustangMike on November 01, 2011, 03:21:44 PM
the bolts that you tighten for the scope rings to rifle need to be on the right side of the rifle when its shouldered.. anytime ive mounted rings different i had massive issues with adjustments during sight in the scope...
Title: Re: Trouble with leapers scope adjustment.
Post by: justkillurself85 on November 01, 2011, 05:54:20 PM
First, I would rezero the scope itself using a mirror, then try screwin with the mounts.
Title: Re: Trouble with leapers scope adjustment.
Post by: MustangMike on November 01, 2011, 05:59:37 PM
First, I would rezero the scope itself using a mirror, then try screwin with the mounts.

please explain rezeroing the scope its self with a mirror
Title: Re: Trouble with leapers scope adjustment.
Post by: bmckennon on November 01, 2011, 07:11:39 PM
ok guys thanks for the input. Bottom line the mounts did not allow for centering the scope on the rifle. but I got  it . now rings in route.
Title: Re: Trouble with leapers scope adjustment.
Post by: lloyd-ss on November 02, 2011, 01:56:51 PM
ok guys thanks for the input. Bottom line the mounts did not allow for centering the scope on the rifle. but I got  it . now rings in route.
Glad you got it figured out.  A 50mm objective is in that transition zone from medium to high rings depending on the gun and the actual scope.  Some 50mm objectives are fatter on the outside than others.

For me, I have used the 2 piece rings with the clamps and bolts located on the right, and sometimes on the left, so long as they were both mounted on the same side.  Also, if you remove the clamps, make sure you put them both back on the same way.  Depending on the manufactureer, the clamp pieces are not symetrical and can be swapped around to get the best fit to the dovetail.  Just make sure the front and back mount are done the same, otherwise you might put the scope tube in a bind.
Lloyd
Title: About Scope Mounts
Post by: gy954 on November 07, 2011, 04:17:15 PM
Let's see if I can write this so that it makes sense....

Dovetail groove width is not completely standarized, and may run from 9.5mm (3/8") up to 11mm. One of the base clamps on a scope mount is fixed, so it follows that the scope may not be centered when the other, moveable, side is tightened down. You can try reversing the mount (switching sides), but more likely you will have to shim the fixed side in order to center the mount. Okay, that covers horizontal alignment. Vertical alignment is a little trickier. 

If you vertically shim one ring of a pair of rings, the scope will rest in it at an angle, tilted up or down, depending on where the shim is. When you tighten the ring's mounting bolts, it will press an edge of the ring into the tube. This means either less grip, actually biting into the tube, or both. A one-piece mount avoids this problem: shim under the mount at one end and the whole thing tilts. Unfortunately, some applications require separate ring mounts. In these cases there are rings that come with a vertical taper. I prefer rings that have a soft pad inside. That pad has enough give to prevent "ring bite", should a ring need vertical shimming.

Finally, optical centering. The clearest image is nearest the center of a lens, so that's where you want the light to pass.  Really expensive lenses have very little edge distortion, so if you're using a Schmidt & Bender, Leupold, etc., you can skip this section. Otherwise, you may want to optically center your scope. One way of doing this is to turn the elevation and windage knobs through their entire range, counting clicks as you go. Then, from one extreme, turn back one-half that number of clicks to the center of the adjustment range. An easier--and arguably more precise--way to optically center a scope is to stand it upright on a mirror. Then look through it and adjust windage and elevation so that the reticle and its reflection overlap.  Of course, once that's done the scope will probably not be centered. If it is only a few clicks off (in windage or elevation or both) then you are fine. If the scope is really off, consider shimming to get close to the optical center rather than adjusting to an extreme windage or elevation.

Whew! Hope that helps.

Regards. / Greg