1) Do they work to turn 2 MOA ammo to 1 MOA ammo ? Tuners work regardless of ammo. Will they turn your Eley club into Eley Tenex no. They will show improvement for every line. A 2moa ammo will shoot smaller 1.8moa??? (number are for discussion purposes)
2) Do I forget about it and just buy good ammo? I can buy a brick of Eley club or less than 200 rds of Tenex. But we are all hoping the Eley Club turns into a Eley team or better with a tuner
3) Do I do both ? You will start with one but get addicted to accuracy and end up doing both.
There is an article by Geoffrey Kolbe Owner of Border Barrels UK "The Vibrations of a Barrel Tuned for Positive Compensation"
Where they test a 22lr with and without a tuner. Here is an excerpt from the article there are 2 photos accompanying the before and one after (notable change)
The groups are self evidently 'round', the spread now being primarily caused by disperse forces due to factors such as the off-axis centre of gravity in the bullets, and the bullets being upset on launch due to the wash of the muzzle blast over their base. Unlike the dispersion caused due to variation in muzzle velocity, these forces have no preferred axis in which they act and so result in round groups. It is the roundness of the groups, being as wide as they are tall, (subject to the usual statistical uncertainties), which shows that vertical dispersion is no longer a significant factor.
As The Roc has three tuners he could make comparisons. I have only shot two the Tuna Can and Spearhead from a buddies Bergera B14r. The results showed the Spearhead preformed better
Trevor