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    Arc Technology range finder

    I dont get it if I am sitting in a ground blind and my range finder says my target is 27 yards then that is what it . If I am sitting in a tree stand 30 feet in the air and I range my target with a normal laser range finder and it says 27 yards then its 27 yards! How do people fall for the arc technology range finders ? Or am I not getting something?

    #2
    you're not getting something... because you are shooting uphill or downhill, gravity's
    effect on the bullet or arrow shaft is slightly different... draw a 90 degree triangle by
    drawing a capital L on a sheet of paper.... if you are at the top of the L , and your
    target is at the bottom of the L, and you draw a straight line from you to the deer and
    measure that distance... it is greater than the distance from the bottom of the L to the
    target... but gravity's effect is equivalent to the shorter distance, not the longer distance
    from you to the target.. hope that makes some sense

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      #3
      it is hard to expalin but true ballistic range is not bull crap, it really makes a difference. if you are 30ft in a tree and a normal range finder says 27 yards and you shoot it for 27 yards, you are going to miss my friend.. it makes more of a diffrence at more extreme angles.

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        #4
        As far as I know it has to do a little bit more with horizontal distance than with gravity stuff, but I could be wrong.

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          #5
          Originally posted by Br'er_Henry View Post
          As far as I know it has to do a little bit more with horizontal distance than with gravity stuff, but I could be wrong.
          not exactly.... the effect of angles on shooting, has been simplified by
          using a shorter "straight" line distance, as opposed to the "true" distance
          from the shooter to his target... you'd have to understand or calculate
          gravity 9.8 meters/second (squared) and it's effect on an object fired
          at a 90 degree or horizontal target line, and it's effect on an object
          fired at say an object +/- 45 degrees from horizontal... but the
          straight line is easier to picture or understand..

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            #6
            Posted by atombomb
            I have one, and for most of my bowhunting, the arc distance is within a yard of
            the straight line distance out to about 30-35 yards... probably works better
            on longer rifle shots up or down hill...


            So like I thought it dosnt make a differance out of a tree at 20 -30 yard shot with a 450 grain Easton FMJ shot form a Mathews Z7 at 289 feet per sec.

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              #7
              Originally posted by ace44 View Post


              So like I thought it dosnt make a differance out of a tree at 20 -30 yard shot with a 450 grain Easton FMJ shot form a Mathews Z7 at 289 feet per sec.
              As long as you're not 30ft up that tree, I wouldn't sweat it.. my stands
              are all around 15ft or less... so unless the animal is right underneath
              me... I use my 20yd pin from 15-30 yards... and I'm shooting 450 fmj
              also, at 282

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                #8
                It's mostly a reason to charge more and to get you to buy one product over another. It's not that I think the arc technology is a gimmick, but, really, how did we ever kill a deer from a tree stand without it?
                Dave

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