Home Forums Hunting & Shooting Long Range Hunting Adjusting for slant angle?

You guys that shoot long range with scope turrets how do u adjust for slant angle?

Just turn the rifle upside down and to the right.

will give that a try Mike...

you are way off if you turn the rifle upside down the bullets rise instead of drop so you have to reverse the way you dial your scope to compensate. It helps to install the 20 moa bases backwards if you are going to use the rifle this way so you wont run out of adjustment.

Use one of these and adjust acordingly

How dose that thing work?
Thanks Randy..

As you are aiming up hil or down hill will give you either the cosine of the angle or the angle in degress, depending on which model that you chose. This info can be entered into a hand held computor ballistics targeting soft ware for real time info or a ballistics date chart can be derived from a desk top PC with said program

With the ACI (angle cosine indicator) one can multiply the turret come-ups by the cosine and use the answer for your come-ups

Thank You!

Spot on John

I'll put the angle and cos. here for ya.
(5deg,cos .996)(10deg,cos.985)(15deg,cos.965)(20deg,cos.940)(25deg,cos.906)(30deg,cos.866)(35deg,cos.819)(40deg,cos.766)(45deg,cos.707)(50deg,cos.643)(55deg,cos.574)(60deg,cos.500)(65deg,cos.423)(70deg,cos.342)(75deg,cos.259)(80deg,cos.174)(85deg,cos.087)(90deg,cos.0)
If you range a target at 500 yards and have and angle of 45deg.
multiply 500x.707=353.5yards. Set your turrets to shoot as though it were a 350 yard shot. You'll be pretty close!

At 45 degrees you can use co-sine or sine since the value is the same.

Don

For most of us guys slope will be a non-issue since the farther the shot from the same elevation difference, the shallower the angle. Thus the smaller the flat line distance from the straight line difference. Now sheep or mountain goat hunters, I could definitely see an angle cosine indicator coming in quite handy.

Man you flat landers have it easy!Gota have a cosine indicator here for long range , our deer elk , and bears, as well as sheep and goats live in places like this:

There, is that better?

Yes they do, the buck I shot in this country in Oregon was just over 500 yards and at 30 angle which it 87 cosine.


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I hunt Colorado and Utah but I just don't hunt the areas that would require me to adjust for that extreme of an angle. Maybe a few back surgeries ago but not any more. I'm not that mad at the elk.

One would figure if he asked, he must have need for the info. Thats good enough for me.

Here is a good article on the subject


Correcting For Angle

Your missing the FUN part!