Playing with the Tactacam

need to dial in your setup just a bit to get rid of the black shadow on the left upper corner. that should be just a matter of lifting you mount up just a touch in that direction. you should be able to get a nice clear, defined circle. then you'll be all set.

it could be also that you have too much zoom dialed in on the scope, but I think its more of my first thought.
 
I agree. This scope has a raised area around the end of the ocular and I don’t know if that is causing the issue. I haven’t played with it a lot but get this when I go to 32 power on the scope. I’ve been editing it out by zooming a bit on the raw video. My first attempt of cutting the video down to small segments so I didn’t zoom anything. 
Thanks for the tip. I will work with it and also see if it does any better with another scope.