Sighting in a scope question??

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Randy1911

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I just put a new scope on my Mini-14 and need to sight it in. I am planning on sighting it in at 25 yards to start with to make sure I am on paper at 100 yards. Here is my question. If one click equals 1/4" at 100 yards, how much does it equal at 25 yards. Doing the math I get 1/16" at 25 yards. Is my math correct? How many clicks does it take to move the POI one inch at 25 yards?
 
You're making this much more difficult than it has to be. Shoot, adjust, shoot. Get close at 25, fine tune at 100. Done.
 
What esheato said. Start at 25 yards to make sure you print on paper. Adjust it there then try it again at 100 yards.
 
If your scope has a turret adjustment value(TAV) of 1/4"@100y, meaning each individual 'click' you move the turret knob moves your point of impact 1/4" at 100 yards...then at 25 yards, each individual click of the turret knob will move your point of impact 1/16"!

You were correct in your math, as for how many 'clicks' at 25 yards you need to 'dial on' to move your point of impact 1"....if each click moves you 1/16", how many 1/16"'s are in an inch.....?

It would take 16 'clicks' to move your point of impact 1" at 25 yards if your scope adjusted as explained above (1/4"@100y).

With your Mini-14, at 25y, you should sight in around a couple inches LOW at 25 yards, to be close to zero at 100y. In other words, your bullet holes should be around 2" BELOW your point of aim, shooting at 25 yards.
 
Thanks for the replies. I just wanted to know so I didn't have to spend all day and a lot of ammo "guessing" on how much to turn the knob. Uncle Mike, thanks for saying to sight in 2" low. That will save me some time sighting when I go to the 100 yard line.
 
Generally, if the centerline of the scope is about two inches above the bore, dead on at 25 is usually around two to three inches high at 100...

Two inches high with a K4 on a Mini at 100 is right at dead on at 200 and roughly six inches low at 300. That's what dead jackrabbits and coyotes always told me. :D
 
Art has pegged the best trajectory for the .223 with a 2" paralax (difference between the line of sight and axis of the bore). Depending on the height of your scope mount. Lower mounts will put the round a little flatter thru 200 meters. Beyond that the 223 does still have energy left but the 22 bullet, especially a lightweight blitz type, will begin to drift with even the slightest wind. If you plan to shoot longer ranges with the 223 consider a heavier bullet if the rifling twist will support it. Have fun.
 
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