I installed a new El’cheap-o Centerfire brand scope on a .223 single shot. To true the vertical cross hair, all I did was set up the rifle on the floor on it’s bipod, use a bubble level on the scope mount to make sure it was square with the world, look threw the scope down the hallway, and used a door jam in my bedroom as a vertical live. Then tightened up the scope.
I took it to the 100 yard range and shot a few groups to get a 100 yard zero. Then set up a target 30 inches tall by 12 inches wide with a vertical line, and a small circle in the middle of the line for the aim point. I shot a five round group at the middle circle to confirm zero. Added 10 MOA up on the scope and shot a five round group. Then went 20 MOA down, (or ten down from zero) and shot another five round group.
All three groups centered on the vertical line! That’s amazing being my scope squaring method was very primitive.
The only thing I noticed, and it’s not that big a deal, is 10 MOA on the scope knobs works out to be about 11 MOA on paper. Other then that, I am surprisingly happy. The scope returned to my 100 yard zero, so it’s all good.
I took it to the 100 yard range and shot a few groups to get a 100 yard zero. Then set up a target 30 inches tall by 12 inches wide with a vertical line, and a small circle in the middle of the line for the aim point. I shot a five round group at the middle circle to confirm zero. Added 10 MOA up on the scope and shot a five round group. Then went 20 MOA down, (or ten down from zero) and shot another five round group.
All three groups centered on the vertical line! That’s amazing being my scope squaring method was very primitive.
The only thing I noticed, and it’s not that big a deal, is 10 MOA on the scope knobs works out to be about 11 MOA on paper. Other then that, I am surprisingly happy. The scope returned to my 100 yard zero, so it’s all good.