suggestions: add elevation and drop next to POI, add a few dimensions for the target, and maybe move POA to the head (the dot I drew is 2 MOA at 100 yards)?
Great graphics but I would still suggest everyone to actually go out and confirm the longer ranges (if available) and not just assume where your POI will be when zeroing at 25 or 50 yards.
Last edited by johnson; 03-25-15 at 05:45.
Can you do the 10.5 with 400 and 500 added, both 55 and 62 gr? Might go to the 500 yard range and try to see how I can do at that distance with it. Add fake legs.
Molon: what software did you use to create the ballistics graphs in your posts?
I'm trying to explain to a young shooter what to adjust to get an approximate 50 yard zero by telling him how many clicks to move the front sight. He wants the irons for 50 yards and less, and will use some kind of optic for anything further. The reason for knowing how much each click of the front sight results in what change in POI is because he doesn't want to be out there all day wasting ammo!
Right now he's got a 16-incher with standard front sight post and the carry handle. I had him check to make sure the base of the front sight post is flush with the opening in the front sight base--check.
He says that at around 50 yards this results in a POI somewhat higher than the target. I told him to go measure how much higher while I ask you guys how much of a shift in point of impact occurs at 50 yards with each notch in the front sight post.
We are NOT talking IBZ or RIBZ, but leaving everything stock. I also believe we are talking .223 pressures and not 5.56 ammo.
Are the adjustments different for a standard A2 sight on a carry handle versus, say, a Magpul rear BUS?
The zero changes with every barrel length/muzzle velocity change....
If you understand the concepts you should be able the figure out your near-zero/far-zero points from a ballistic calculator, which you can find on the web....and your own particular rifle/ammo combination.
This is one of the most informative posts I have ever read. Thank you for the info.
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