calculating short range MOA ?

Forums FT, Benchrest & Target Shooting calculating short range MOA ?

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    mac1911
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    New here to air gun nation and im used to shooting at hundreds of yards but now im shooting more and more pellet guns, I bought a Daisy 853 through the cmp for basic practice over the winter. I was playing around with the sights at 50 feet and suddenly I found myself trying to figure out how much I needed to move the sight.

    The rifle has the inexpensive match sights which are listed in the manual as .413 moa sights or .048″ change at 10 meters  with 10 clicks per rotation so about 4 moa roughly ?

    Now shooting at 50′ I have been  shooting at the apple seed  ATQ target  I needed t0 adjust my point of impact about .5″  thing is I have no quick way of figuring this out that comes to mind
    How or what is the calculation to figure out the MOA to adjust the sights at small distances

     

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    Scotchmo
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    You said that the sight changes 0.048″ per click at 10 meters (32.8ft).

    You are shooting at 50′ and want to change it about 0.5″.

    32.8’/50′ x 0.5″/0.048″per-click = 6.83 clicks

    You would need to move the sight 7 clicks to move the poi about 0.5″.
     

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    Saltlake58
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    As I understand MOA, it’s a bit over 1 inch at 100 yards.
    So, it’ll be a bit over half inch at 50 yards
    bit over quarter inch at 25 yards

    So if your turret is a 1/4 MOA per click, 

    To move 1/2 MOA (1/2 inch) at 100 yards is 2 clicks
    to move 1/2 MOA (1/4 inch) at 50 yards is 2 clicks
    to move 1/2 MOA (1/8 inch) at 25 yards is 2 clicks,

    Or
    to move 1/2 inch at 100 yards is 2 clicks
    to move 1/2 inch at 50 yards is 4 clicks
    to move 1/2 inch at 25 yards is 8 clicks

    I don’t work well in equations, so this is easier for me to remember.  The number of clicks doubles each time you half the distance to the target, to move the scope zero the same distance across the target.
    Feel free to fact check, as I’m self taught and that’s dangerous.
     

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    mac1911
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    Yes I’m pretty good with the simple 25 yards and up but now where talking feet and like you Im pretty self taught in the gun stuff and a product of the pass,em through public school system I don’t always see the answer because I’m not sure what method to use 

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    mac1911
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    Yes I’m pretty good with the simple 25 yards and up but now where talking feet and like you Im pretty self taught in the gun stuff and a product of the pass,em through public school system I don’t always see the answer because I’m not sure what method to use 
    a minute of angle is .1745″ @ 50 feet figured that much

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    Scotchmo
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    “mac1911”Yes I’m pretty good with the simple 25 yards and up but now where talking feet and like you Im pretty self taught in the gun stuff and a product of the pass,em through public school system I don’t always see the answer because I’m not sure what method to use 
    a minute of angle is .1745″ @ 50 feet figured that much

    
And if each click moves it .413moa,

    .413moa x .1745″@50 feet = .072″ for each click

    If you need to adjust your sights by .5″,  then 7 clicks will do it.
     

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    Saltlake58
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    Probably ought to check out your scope elevation capabilities as well.  When shooting really short, you can max out the adjustments very quickly and may need to shim the scope.  If you max out, the erector tube assembly could do a bit of free floating as the springs won’t hold it in place inside the scope (bottoming out removes all tension from one of the springs). and the scope may shift POI between shots.  If your scope seems to be wandering, consider a shim and see if that helps.

    Just a thought.

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