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Thread: 36 yard RDS zero ?

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  1. #1
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    36 yard RDS zero ?

    My friend just did me a solid and installed my RDS on my AK74. He said it was the flattest trajectory from 0-300 yards.

    Anyone else this use this RDS zero.

    PB
    "Air Force / Policeman / Fireman / Man of God / Friend of mine / R.I.P. Steve Lamy"

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    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.
    Last edited by GTF425; 09-14-20 at 19:35.

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    Yea, I guess its if you want to maximize your guns capability to shoot at 300yrd POA, POI. I see your point too, Ive always used 50-200 confirming out to 200.

    PB
    "Air Force / Policeman / Fireman / Man of God / Friend of mine / R.I.P. Steve Lamy"

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    My friend just did me a solid and installed my RDS on my AK74.

  5. #5
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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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    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.

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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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    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.

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    Assuming that Nikon SpotOn is correct with the velocity and BC for Wolf ammo, a 25(ish) yard zero will maximize your PBR.

    What is your approximate sight height above bore and what is the maximum acceptable POI rise/fall (how big is your target)?

    Andy

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    This, of course..has been the subject of un-countable arguments, stats, ballistic charts, personal experience...ect. On this forum alone SCADS of opinions.
    My thoughts are this: Ive realistically looked at my AO. Ive realistically looked at MY capabilities, weapons, ammo, gear.
    I went with the 50/200 zero- and confirmed it many times with my weapons- dead on at 200. I know my holds out to 400.
    In a SHTF/SD situation, Im as confident as I can be about my ability to hit fast aout to 300 & with a bit more time-out to 400.
    I believe each person has to decide whats best. There is NO agreement whatsoever from the pros on youtube..some argue 100yd sight in, some 50, some 36, 25 and probably even more.
    Im going with what I KNOW-& thats 50/200.
    The obedient always think of themselves as virtuous rather than the cowards they really are.

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