fine art of dialing the scope in

[rhino519]

propably has been asked before, so forgive me

Ive been shooting for quite some time, mostly within 300m mark, so this has always intrigued me,

for short distances its easier to just aim off, depending on the wind and bullet specifics, but for ranges over 400m adjusting the scope makes more sense

so 1MOA =25mm (~) at 100 m or 1MOA= 1in at ~100 ya

here is what Im trying see if I figured it out correctly

at 600ya 1moa=6in, if the round that Im using has a drop of 48in at 600ya
that comes to 48/6=8, so the correction for the scope should be 8moa up,
since most scopes have a 1/4moa a click corrections available that comes to
8x4=24clicks up

so far so good? or am I right out of her?

 

[Bogman]

Not sure if your calculation is right but I do know that 8x4 is 32 not 24

 

[notenough]

Correct

Bogman is correct on the math, it's 32 clicks. The theory is correct for the scope change. Now let's just hope you have a good scope that is actually 1/4" adjustments.

 

[yodave]

good rule of thumb is this, i will use a 1/4 inch click scope for an example

at 100 yards 1 click equals 1/4 inch
at 200 yards 1 click equals 2/4 inch or 1 half inch
at 300 yards 1 click equals 3/4 inch
at 400 yards 1 click equals 4/4 inch or 1 inch
at 500 yards 1 click equals 5/4 inch 0r 1 and 1/4 inch

see the pattern, same works for eight inch click scopes and it is way easier to calculate in your head when at the firing line.

 

[rhino519]

you right Bogman 8x6=32

good point on scopes, I have a Bushnell, that say 1 click=1/4moa, yet at the range, at 100ya that one click correction looks more like 1in

so, so far so good, let move into windage, an average .30 cal bullet doesnot get affected much by a side wind, on ranges of up to 300m,
I mean a mild or moderet wind of up to 10km/hr would translate to how much corection?
it its within 2moa at 300m would that translate to 4moa at 600m?

this part Im totally clueless

 

[notenough]

Interesting

If you want to try something interesting and you know your load bullet weight, BC, muzzle velocity and sight height you can go to the Hornady web site and plug your info in and it will give you all your information and it can be printed out with a cheat sheet for taping to your rifle. You can even input temp and wind for different results.

Here is the link for their Ballistics calculator.
http://www.hornady.com/ballistics/ballistics_calculator.php