From this thread
Here is what we learned last night. We taped heater hand warmer packs to cardboard targets and set them up at 50 yards.
We used the “clip-on” method for the IR Patrol 300 in front of our Trijicon V-COG’s also sighted in at 50 yards.
Set the V-COG’s to 1.5 power and the picture is awesome.
However the rounds were not hitting the target as projected by the V-COG’s. There was a shift in what we saw and what we actually hit by about 6 inches at 50 yards.
What we learned was to first sight in the IR Patrol 300 at the same 50 yard distance as our V-COG’s but without the V-COG.
Unlike a scope:
Left windage is shifted right and vice versus.
Elevation is down for up and vice versus.
I forgot that the IR Patrol 300 is basically a small TV screen that needed adjustment too.
Then add the V-COGs and turn off the recticle. Works great now !