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Estimation of Shot Error due to Rifle Cant 2019-02-08

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Overview Reviews (15) History
With all of the discussion about leveling your optic, I figured I would post a resource to allow any interested party to understand the math/physics behind the worst of the canting errors. This discusses the situation resulting from a canted rifle and a canted reticle that has not been aligned to the fall of gravity.

Hope you enjoy it
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Reactions: JohnAnkers, Texman1775!, georgeIfisher and 18 others
Author
Nik H
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914
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11,728
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4.93 star(s) 15 ratings

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davemod56
I really appreciate the effort put into this article, however as someone who is not a math guy and dyslexic it is not of a lot of use to me. Having said that, it is this kind of math and physics that is applied by others to develop things people like me can (and do) use! correct me if I'm wrong (and I'm sure people will) but if you boil all this down to its simplest form, this is the result: make sure that your scope is mounted level on your rifle (Wheeler scope kit levels) and then make sure that your rifle is level when you pull the trigger! Simple right? Well no and I think that is the point of the article. I have tried bubble levels on my scope (not bad) BUT... the best thing for me is a LED level made by MDT (MV3 Send-It). I can literally have one eye on target and the other sees the LED's on my device. Reticle on target + green LED = 1/4 MOA groups. But again, this article is the reasoning behind the technology
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Lawrence60
Having read the resource twice and found that the phrase that describes me in this case (and a probably unique to the UK) is that I am as thick as two short planks and was lost at the first x, I admit that maths and algebraic equations are far from my strong point, what I did glean from resource will help me with my long range shooting but I think I will have to break the article down in to nibble (not bite) size pieces and spend several hours digesting it and breaking the calculator out.
I have rated it good because once I can get my thick head around the article it will make a huge difference when I am at the ranges.
Never will I look at cant in the same way again I have even bought scope and rifle levels to help me keep on the straight and narrow, pun intended.
Keep these resources coming because even when I get lost on paragraph one they help me to shoot further and more accurately.
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Mrbigballs85
Makes sense
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BFuller
Nice work. Plus, it looks like you used LaTex so you get extra points in my book!
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9rcrazy
Very clear and concise! Thank you!!
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MLS2GO
Wow a real eye opener for a Noob like me. thanks.
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Near miss
An eye opener!
It also seems that optics mounting height is almost irrelevant.
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X
Great paper thanks!
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G
Good article. Thanks
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R
Thank you! Very interesting. Did not realize velocity had such an impact
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