Actually the BOSS works perfectly and sucks no ass at all.
You can take any factory ammo and make it shoot great by tuning with the BOSS. The ammo can suck complete ass in a bare barrel.
Why can you make it shoot in a rifle with the BOSS? (Barrel tuner)
Because you can change the harmonics of the barrel with minute changes in the position of the weight to suit the ammo.
The reason cans help accuracy and don't change accurate existing loads is because a weight that heavy on a muzzle DAMPENS harmonics even more....like I've already submitted
Have you used a rubber barrel tuning donut like the LimbSaver? They actually work. Why? Because they minutely change the harmonics of a bare barrel.
