Just more clickbait.
Who out there wants a properly documented, single or double blind study on the effect of tuners?
It wouldn't be hard at all to accomplish. I figure 200 rounds would handle it.
Here is what I'd suggest with an F-class bent: (Requires a 3 person research team - Researcher, Shooter, and Test Operator)
Rifle, 284 win F-Open rifle:
1) Researcher develops handload that shoots well in a fully seasoned barrel with Tuner at starting position (to offset speedup), then loads 200 rounds with that load to full F-class match quality.
2) Shooter conducts the tuner testing as described by the tuner maker (small increments, shooting groups at 100 yards). Test Operator and Researcher are not permitted to see results until after step 4.
3) Shooter determines best , worst, and one random setting in the mediocre range, documenting group size difference and group shape. Targets are retained for later analysis.
4) At 600 yards on an electronic target, Shooter shoots 5 shot groups as directed, shooting randomly selected pieces of ammo, but does not know which setting is being used during any given group (tuner covered from view). Test Operator uses a digital random selection tool to determine which of the three settings determined in step 3 to set and keeps records of tuner setting for each group shot. Researcher documents the groups for Mean Radius, Group Size, and Group Shape without knowledge of tuner setting. Atmospheric and velocity are monitored throughout testing. Testing continues until 7 groups of each setting are shot.
5) Researcher correlates the groups shot at 600 yards with the tuner setting used for each group. Shooter, Researcher, and Test Operator evaluate visually the performance of the three settings in reference to each other. Each independently determines Best, Worst, and Mediocre setting
6) Researcher conducts base data analysis of group data to validate best worst and mediocre setting numerically and conducts statistical tests to determine the confidence level of any differences in performance from setting to setting.
7) All raw data and statistical analysis are published (no hidden data, no agenda, just science).
Anybody interested in something like that?