Ah... I just thought of one thing that may skew the results...
My red dot still has the original battery that came with it and I have no idea how much juice it still has left. If the brightness is lower than your red dot you may need to try a fresh battery. Just a thought.
My red dot still has the original battery that came with it and I have no idea how much juice it still has left. If the brightness is lower than your red dot you may need to try a fresh battery. Just a thought.