Question about Tasco 3-9x40 World Class Riflescope 30/30 Reticle scope Clam Pack WC3940MD

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Crosshairs are cocked to the right.

This is a Tasco World Class 3X-9X.40 Riflescope. The crosshairs are cocked to the right instead of being horizontal and perpendicular. It has given excellent service up until now. Is there a way to line the crosshairs up properly? Thank you, Rhett Sanders

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  • rs5775 Dec 15, 2008

    Thanks. The scope is in the rings correctly. Even with scope out of the rings when you hold the adjustment knobs in the correct position, the crosshairs are still cocked to the right -- like the crosshairs in the scope itself have shifter almost to this position -- X instead of + -- any ideas about that?

  • rs5775 Dec 31, 2008

    The problem is INSIDE the scope. Turning the scope in the scope rings does not solve this problem. When the cross hairs are verticle and horizontal the adjustment knobs are "****-sided" (like 10 and 1 o'clock on a clock instead of 12 and 3 o'clock...) Is there any way to correct that? RS

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1. You first make a 'plumb line' to compare your cross hairs to. Go out about 15 - 25 meters and hand a length of para-cord or reasonably thick string (so you can find it easily in the scope), weight the end of the cord will some lead weights. I've even used some box end wrenches tied to the end in the field.

2. Fill a small ice-cream pale or similar with a couple liters of engine oil that the weights on your line with hang in. The oil will eliminate the line from swaying by dragging on the weights and ensuring verticality

3. Place the rifle in a secure mount and re-enforce with some sandbags.

4. Line up the scope (mounted on the rifle) with the line.

5. Use a small level to ensure the rifle is as close to perfectly level as you can make it, both front to back and side to side.

6. Loosen the scope in the rings and adjust the scope untill the cross hairs are vertically in-line with your plumb line.

7. When you are satisfied tighten the scope down and use some medium stength (blue) locktight on the screws. Use the manufacturer's suggested tourque spec and Avoid Over Tourqueing the screws. Some specs are as little as 10 - 20 INCH pounds. Thats around one to one and a half FOOT pounds

It takes some time and a little prep work - but if done with some care it can yield fine results. Remember to use caution when tourquing the screws - people often confuse INCH punds and FOOT pounds. the conversion is 12 Inch pounds to 1 Foot pound.

If you can't get a proper tourque wrench you are better off using a little less tourque and utilize some Lock Tite to make sure the screws wont move down the road.

Good luck!

Posted on Dec 30, 2008

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Your scope has spun in the scope rings. Loosen the screws holding the scope to the rifle and turn scope until crosshairs are into position. Then tighten screws. You will need to sight in again. If it keeps moving replace scope rings.

Posted on Dec 15, 2008

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