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The Handloaders Bench > General > Optics and Accessories > Rifle and scope tilt

Rifle and scope tilt
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 Posted: Sun Oct 19th, 2008 05:20 PM
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overbore
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Since I just finished mounting a scope and an anti cant device, ACD, to my son's rifle, I found the following data that is most useful to game and target shooters:

"According to the Marine Corps Sniper Manual, compensating for cant/tilt is critical to long range shooting.  At 1,000 yards  6 degrees of tilt will move the bullet strike 55 inches from point of aim's impact with no tilt!

Six degrees of tilt at one hundered yards(100) moves the impact 1/2 (0.5) inches."

Here is a chart of tilt effects  at 600 yards and 1,000 yards:

                             600 yds                                                      1,000 yards
Angle of tilt
                1      2      3      4      5      6                        1   2        3       4   5    6   degrees

Distance from level zero impact in inches

                .5    2.3  4.5   6.7   9.0     11.0                  9.0  18.0  27.0  37, 47.0  55 in.

No wonder we miss!!

I started by leveling the scope with alevel, securing it with Blue thread locker then leveled the ACD with its level verified against the level scope. 

Overbore


 Posted: Thu May 14th, 2009 10:33 PM
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jdiaz
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Joined: Thu Dec 25th, 2008
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What scope rings can you recommend for an AR 308 type rifle not having much luck with the factory ones?  :lol:


 Posted: Fri Aug 7th, 2009 02:28 AM
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dho3
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Joined: Sun Sep 7th, 2008
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Warne tactical mounts are first rate and second to none. Badger ordinance is also great, as well as TPS. This I mean the rings.

Last edited on Fri Aug 7th, 2009 02:29 AM by dho3



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 Posted: Fri Aug 7th, 2009 01:41 PM
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RemMan700
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I have a Rock River Arms "High Riser" one piece scope mount on my AR. Paid $55 for it and it is just the right hight. Very solid mount for the money.


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