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Thread: 36 yard RDS zero ?

  1. #11
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    I use the 36y/m zero. I shoot irons and 300m is about the limit of my middle age eyes to actually see a target well enough to hit. Which I can do consistently as my last outing proved. Using a Colt SoCOM 14.5 barrel and 55gr ball. After zeroing at 36 I readjusted slightly at 100 then moved out to 200 and 300. Biggest thing IMO is knowing your holds.

  2. #12
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    Quote Originally Posted by mark5pt56 View Post
    Something to consider, Look at the accuracy potential of the ammunition, the firearm and the biggest one of all-the shooter. Look at the differences in the various zeros with the actual useful range or I should say most likely range and in the end I wouldn't fret over which zero for the most part.
    Strelok has a feature where the user inputs in the target size(like vital zones on an animal) then it uses that along with cartridge ballistics and sight height over bore to give a recommended point blank sight distance to guarantee(in theory) a hit in the desired area. Then the particulars of real world you mentioned have to be factored in to whether that will/can happen.

    https://www.chuckhawks.com/kill_zone...010%22%2D11%22

  3. #13
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    Quote Originally Posted by Five_Point_Five_Six View Post
    It's basically a lazy 300 yard zero.

    This.

    The second intersection is the zero.

    If you don’t zero an AR at 200 yards you’re doing it wrong.

  4. #14
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    I grew up with the 25, I've evolved to the 50/200. Satisfied with it.

    36 does seem pointless. Knowing your holds, and your own weapon, matters most, obviously.

    If you show up, and you can make the hits, I don't care how you zeroed.

  5. #15
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    Quote Originally Posted by GTF425 View Post
    It's kind of a compromise for having limited distance to zero a rifle at. Nothing beats being able to push it to (at a minimum) the max ordinate distance of the weapon so that you get the most target and weapon input when zeroing, but given where the 36y zero was born (Military) it is a compromise.

    As for the flattest trajectory, that's not necessarily true, because it depends on what distance we're concerned about. If 300y itself is the goal, then the 36y will theoretically be very close to POA at that distance. A more common zero is the 50/200, which is still very flat out to 300y. I run a true 200y zero, and my POI @ 100y is +1.1" and POI @ 300y is -6.4". The 50y will produce similar results.

    In comparison, using a ballistics calculator, the 36y zero produces a POI +3.2" @ 100y, +4.3" @ 200y, and -0.1" at 300y.

    I think it's a balancing act between prioritizing the first 200y, or 200-300. In essence, they're all very effective and infinitely better than the 25y "zero".

    I think you will be well served with the 36y zero, but for me, the first 200y is a higher priority so I prefer to zero accordingly.
    Even at 300 with the 50/200 you mention you're only about 6" low. I can live with that.

    I also have found by looking at tables that even with .308 that is a good, relatively flat zero.

    50/200 all day long baby! Seems to be the best all-around zero for common long-gun ammo (5.56, .308, even 7.62x39). Also the easiest to use because just about everyone can get at least 50y to zero at. My home range is 100y.
    Last edited by ABNAK; 09-18-20 at 17:38.
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  6. #16
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    Quote Originally Posted by ABNAK View Post
    Even at 300 with the 50/200 you mention you're only about 6" low. I can live with that.

    I also have found by looking at tables that even with .308 that is a good, relatively flat zero.

    50/200 all day long baby! Seems to be the best all-around zero for common long-gun ammo (5.56, .308, even 7.62x39). Also the easiest to use because just about everyone can get at least 50y to zero at. My home range is 100y.
    You will not get a 50/200 zero with 7.62x39.

  7. #17
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    Quote Originally Posted by Five_Point_Five_Six View Post
    You will not get a 50/200 zero with 7.62x39.
    True, but it isn't too shabby from what I recall looking at it some time ago.
    11C2P '83-'87
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  8. #18
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    Quote Originally Posted by ABNAK View Post
    True, but it isn't too shabby from what I recall looking at it some time ago.
    If you zero 7.62x39 at 50, you'll be 8" low at 200.

  9. #19
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    Quote Originally Posted by ABNAK View Post
    True, but it isn't too shabby from what I recall looking at it some time ago.
    It's a 50/100m zero for 7.62x39. I zero at 100m and that gets you on target without thinking about holds out to 150m. At 200, you're about 7-8" low.

  10. #20
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    Quote Originally Posted by mark5pt56 View Post
    Something to consider, Look at the accuracy potential of the ammunition, the firearm and the biggest one of all-the shooter. Look at the differences in the various zeros with the actual useful range or I should say most likely range and in the end I wouldn't fret over which zero for the most part.
    I've often said that a leading merit for the 50yd zero is that it's the farthest distance at which most owners retain enough proficiency to achieve an actual (or at least reasonable) zero.
    2012 National Zumba Endurance Champion
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