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User Panel
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TX, USA
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Posted: 4/16/2021 8:43:11 PM EDT
I went to zero a new scope.
shooting an ar22 using eley outlaw. I am an idiot because I set the zero stop and left the tools at home. Thought I packed them, but didn't have anything when I got there. Since I set the zero wrong, I was able to hit poa at 25 yards. Went to see what it would do at 50 yards and it was hitting about an inch high or so. what did I do wrong? Was it me? I was able to group fine at 25 yards. all the ballistic apps say it should be half an inch or more lower. |
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Posted: 4/16/2021 8:47:05 PM EDT
[Last Edit: -Obsessed-]
[#1]
If you zero at 25 it will hit high at 50. Then it will come back down.
A common zero is the 50/200 for 223. It is low to 50, high from 50-200, then low past 200. Same principle applies to rimfire. |
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IN, USA
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Posted: 4/16/2021 8:57:03 PM EDT
[#2]
If I remember correctly, the common 0 for .22 LR is 25/75.
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TX, USA
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Posted: 4/16/2021 9:08:54 PM EDT
[#3]
hmm, then the ballistic app I tried doesn't work for rim fire, or that close. Have to experiment with the numbers I guess.
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Posted: 4/16/2021 9:12:44 PM EDT
[#4]
Ballistic rounds follow ballistic curves. They are not laser beams.
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MS, USA
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Posted: 4/16/2021 9:35:09 PM EDT
[#5]
Yes. Even w .22lr a 25 yard zero will be high at 50 and back on again around 75 with AR height sights. Did you put your sight height above center bore into the calculator?
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ND, USA
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Posted: 4/16/2021 9:36:03 PM EDT
[#6]
An inch high at 50 does not hurt a thing. You will be on point of aim at 75 or so.
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MS, USA
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Posted: 4/16/2021 9:37:33 PM EDT
[Last Edit: GrimEReaper]
[#7]
From my calculator for AR height sights.
RangeElevation (yd)(in) 0-2.8 5-2.06 10-1.43 15-0.88 20-0.4 25-0.01 300.3 350.52 400.66 450.7 500.66 550.53 600.3 65-0.02 70-0.43 75-0.95 80-1.56 85-2.27 90-3.08 95-3.99 100-5.01 |
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TX, USA
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Posted: 4/17/2021 9:58:40 AM EDT
[#8]
yes, I entered what the scope mount said the height was. 1.43 I think.
I guess I have never sighted in a rifle that close in before. I realize for like 223 to expect the arc and I even remember reading a hunting thing about bracketing zero so you are good out to x yards if you zero at y yards. I just was expecting it to keep going down for some reason. Thanks all. |
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Posted: 4/17/2021 10:55:27 AM EDT
[#9]
Mount height is not height above bore. You have to add about an inch to that from rail top to center of bore. Try that and see how it works.
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TX, USA
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Posted: 4/17/2021 1:25:25 PM EDT
[#10]
Ah, didn't realize that.
yes that totally changes the chart. high point is actually at 40 yards. but it makes the 50 yard high that I don't see using 1.43 for sight height and using 2.5 instead. Thanks a lot. There seems to be a lot more to the ballistic calcs for input than I understand. |
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Posted: 4/29/2021 11:52:54 PM EDT
[#11]
When I zero at 25 I'm .1m high at 50. I shoot subsonic. They should be near same zero
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