I found this design a bit more forgiving at 300,400yds.A 6inch black circle thru my clip on which is on black heat.The red dot of my day scope retical I just adjust magnification to fit red dot inside target black dot.I allow about a inch between circumference of outer and inner circles.I can see outer black ring around red dot.Can hold this steady at 300 to 400yds and get good elevation data.At 400yds I got 3 shots about 2 inchs about horizontal.So 2 clicks down on day scopes gets me 400yds zero.Shots fired on a nor west windy evening so nothing straight for windage.Two small white labels on tatget show my 200yd and 300yd zeros.
When adjusting day scope,I adjust thermal clipon cross hair up n
down to line up with day scope cross hair.
All works fine.
Second photo shows red dot of day scope inside black heat dot of what thermal shows.
I now leave my day scope on 2 1/2'' high at a hundy and that gives me a 2 1/2'' drop at 280yds.Thermal clip on set at 2x match's days scope cross hairs.All good.
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