Yesterday, took the rifle out; shot at 25 yard and adjusted the 1X scope to the paper center. Then moved to 100 yard.
The first 2 shots hit right and low. The scope was adjusted left and up. Three more shots were taken. The scope was adjusted down 2 clicks, and the elevation dial was loosened removed and zeroed.
Today, the target was set at 200 yard, and 2 shots taken from a squeaky clean cold barrel, after the elevation dial was twisted up 5 1/2 moa.
After just 2 shots the wind started, so target shooting was ceased, however there was a cheezit box in the truck, so it was filled with water and set out at 220 yard. The elevation dial was raised another moa, and shots were taken at the box.
The first shot was high, so i guessed i was holding too high, and as much as possible held lower. The thing is, the cross hair of the one power scope completely obscured the box.
The second shot was low, and the box fell over. A trip was made to the box with more water; it was refilled and stood.
The third shot was low, but the box didn't fall over and held most of the water. The box did roll some, but stood.
The fourth shot hit low and right on the box, managed to empty the box, and ruined it's ability to hold water. Upon returning home a ballistic calculation was made for a 220 yard zero.
It appear my guesstimate of elevation setting was 1 click low.