Tuning FX IMPACT M3 SLUG SETUP TEST WITH HARMONIC BARREL TUNER SHROUD

This is one of the best edited videos, with great camera angles and proper focus/background! Real quality. 

One suggestion about the gun hold: I am not an expert by any stretch and I may be seeing it wrong, but it seems that your heart-beat is introducing a horizontal string in your shots. It's visible in the scope view. With such a table-top setup there should not be any movements. 
 
You touch the gun with your shoulder/cheek - body parts, a high power scope will show you the heart-beats motion horizontally.

I tried shooting 100 meters with any kind of front bipods and tripods also supported the rear with a monopod, got the same visual results. Looking through my 10-50x60 optics.

Building now my own one-piece rest over the winter, will see how that helps "free floating" the rifle and without a human errors.