Should be easy enough to zero the reticle. The 1st circle is 3 MOA in diameter. Just use the lower part of the 1st circle where the vertical line intersects it, and adjust the scope until the bullet hits 1.5" higher for a 100-yd. zero. If u like the PBR system of ~1.5" high at 100 then zero the gun as above until the group is centered at the top of the 1st circle (all of this at the optic's highest power).
The problem that i see with the reticle is that when u crank the optic down to 3x (3-9), the center circle increases in size (subtension) to a whopping ~9 MOA. But the advantage to this is that if you're zeroed for about 1.5" high at 100, with most fast stepping centerfires, the lower part of the 1st circle should be on at about 400 AT 3-4x (~4 MOA).
The problem that i see with the reticle is that when u crank the optic down to 3x (3-9), the center circle increases in size (subtension) to a whopping ~9 MOA. But the advantage to this is that if you're zeroed for about 1.5" high at 100, with most fast stepping centerfires, the lower part of the 1st circle should be on at about 400 AT 3-4x (~4 MOA).
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