Thread: Tall target test

In an earlier post I mentioned my come-ups were accurate to about 700 yds, then past there I was hitting high. So I've just done my version of the tall target test. I "tied" the rifle down to the table and had a target at 100yds. I put up a target with inches marked out.
5 MOA moved 5.5"
10MOA moved 11"
15MOA moved 17"
20MOA moved 22.25"

So it has a pretty consitent error. 1MOA in my scope is 1.1" rather than 1.047"
At 20MOA the error was the most so 22.25@/20MOA = 1.1125"
So in shooter I've applied a correction factor 20MOA should be 20.94". So I went 20.94/22.25 to get 0.94112360.
Without the correction factor at 980yds I had to go up 25.1MOA, with the correction factor I only have to go up 23.6MOA, so 1.5MOA less. Which amounts to 15.3" at 980 yds, which is about how high I was on the target.

At 700yds without the correction the come-up was 14.7MOA, with the correction factor up 13.9MOA so 0.8MOA difference or 5.8". Shooting at a rock I obviously didn't notice it. (The 980yd target was a large plywood sheet, so I could measure it)