sleepyone
Member
I have always paid a gunsmith to mount and boresight my scopes for me. I decided I could start using that money for better purposes, like ammo! Today I mounted my Buckmasters 3x9 40mm scope on my Marlin 336C .30-30 and went to a local outdoor range. A good friend told me he never bore sights scopes by removing the bolt and doing it by eye or with a laser bore sight. Here is the method he has been using for decades.
He said aim your first shot at the bulls eye. After the first shot, do not move your rifle and while looking through the scope adjust it until the reticle is on the hole from the first shot and then proceed to zero it from there by shooting at the bulls eye and making your fine adjustments.
My first shot was 4" low and 5 1/2" to the left of the bulls eye. I was using a rifle rest with only one sand bag, so after my first shot my rifle and rest had jumped back and off center several inches, so I thought well that method was not going to work now since he had said not to move your rifle after the first shot.
So, instead I just adjusted my scope directly to the bulls eye. It took me 44 clicks up and 46 clicks to the right to zero it in at about 60 yards. My 3 shot group was just under an inch. My scope adjusts 1/4" per click, so I figure being 4" low to start should have only taken 16 clicks to zero my elevation instead of the 44 clicks it actually took. And being 5 1/2" left to start should only have taken 22 clicks to zero my windage instead of the 46 clicks it actually took.
What gives? Would my friend's method still have worked if I moved my rifle back into the original position as close as I could and adjusted my scope to the first shot? Would it have taken less adjustment? What is the difference between his method and what I did, and is my method just as good even though it seems like I had to make a lot more adjustment then what the numbers said I should have?
He said aim your first shot at the bulls eye. After the first shot, do not move your rifle and while looking through the scope adjust it until the reticle is on the hole from the first shot and then proceed to zero it from there by shooting at the bulls eye and making your fine adjustments.
My first shot was 4" low and 5 1/2" to the left of the bulls eye. I was using a rifle rest with only one sand bag, so after my first shot my rifle and rest had jumped back and off center several inches, so I thought well that method was not going to work now since he had said not to move your rifle after the first shot.
So, instead I just adjusted my scope directly to the bulls eye. It took me 44 clicks up and 46 clicks to the right to zero it in at about 60 yards. My 3 shot group was just under an inch. My scope adjusts 1/4" per click, so I figure being 4" low to start should have only taken 16 clicks to zero my elevation instead of the 44 clicks it actually took. And being 5 1/2" left to start should only have taken 22 clicks to zero my windage instead of the 46 clicks it actually took.
What gives? Would my friend's method still have worked if I moved my rifle back into the original position as close as I could and adjusted my scope to the first shot? Would it have taken less adjustment? What is the difference between his method and what I did, and is my method just as good even though it seems like I had to make a lot more adjustment then what the numbers said I should have?