Well It's not a perfect test however you need to make some mistakes along the way in order to learn. Here are my initial impressions of the tuner and function. Thanks for coming along this journey to precision.

The EC tuner was installed onto a Bartlein Heavy Palma barrel, Panda F-class action, Jewell BR trigger shooting off a Dolphin Bi-pod. All groups shot at 300yds

Quick Summary:

1)The EC tuner does affect the barrel harmonics and has the potential to tune a less than optimal load to shoot waterline. Further testing would be needed. However due to the maybe a less than optimal load the "flat" nodes may not be as wide as they could be.

2) Testing a closer range would limit any skewed result induce by the wind or environment.

3) Tuner setting for once test case is repeatable and does produce similar results. Further testing and comparison is required.

Thanks for tuning in remember to keep an eye on the flags and tight groups.