Gunsmithing To raise the point of impact...

Re: To raise the point of impact...

Thicker in the rear ring so as to angle the line of sight downward in relation to the bore.
 
Re: To raise the point of impact...

Read the directions that came with them. It does not matter if you put them in the front or the rear. But make sure you use the right ones.Look at the ones you have, a - and a + #. Keep them together. Do not use them with a 0 deg in the same ring. #'s stay together, don't mix them up. You will crush the tube if you mix them up.