I have two rifles, identical scopes - Athlon Ares ETR 4.5-30x56.
Tikka T3X 308 - 0moa rail - 1.80" height over bore. - 100 yard zero
Tikka T1X 22LR - 25moa rail - 1.96" height over bore. - 25 yard zero
With my 308, I have 14mils left of upwards adjustment.
With my 22, I have 18 mils left of upwards adjustment.
I would think most scope makers would try to make center-line of the scope relatively center to common zeroes. So I was expecting more of 16mils left on my 308, and given the short distance zero of my 22, I'd expect also 16 mils, + 25moa base, so like 23mils left. (25moa = 7mils?)
How/why does this math work out that way? Is this just a poor scope mfging to have the center-line be not as center? - Or scope mfg assume that everyone runs a 20moa rail, so they try to keep people's zero at the centerline for best optics clarity?
Tikka T3X 308 - 0moa rail - 1.80" height over bore. - 100 yard zero
Tikka T1X 22LR - 25moa rail - 1.96" height over bore. - 25 yard zero
With my 308, I have 14mils left of upwards adjustment.
With my 22, I have 18 mils left of upwards adjustment.
I would think most scope makers would try to make center-line of the scope relatively center to common zeroes. So I was expecting more of 16mils left on my 308, and given the short distance zero of my 22, I'd expect also 16 mils, + 25moa base, so like 23mils left. (25moa = 7mils?)
How/why does this math work out that way? Is this just a poor scope mfging to have the center-line be not as center? - Or scope mfg assume that everyone runs a 20moa rail, so they try to keep people's zero at the centerline for best optics clarity?