I know rimfire enthusiests use barrel weights to "harmonically" tune their rifle barrels. Anyone got experience with tuning airguns that way?
Hi James, thanks for responding.
I do not have a lathe and I'm retired (read poor). I've recently managed to scrape together enough to buy a Dreamline and mount a reasonably decent scope (Optisan Taipan) on it. But I'm not seeing the performance I know the gun is capable of. Part of it is undoubtedly me, but I think I need to find a harmonic tune for the gun too.
As I understand it, Harmonic tuning is adjusting the speed of the pellet/slug to leave the barrel on a resonance node (of the barrel). Bob O described his process on his Impact as doing a velocity tune and then fine tuning the muzzle velocity using the valve stop adjustment until you find the point at which the projectile leaves the barrel at a resonance node. Well and good, except my Dreamline does not have a valve stop adjuster. So I'm looking into changing the resonance of the barrel, with barrel weights, to adjust the resonance node to the time the projectile leaves the barrel. What I was hoping for was to find out where I can buy barrel weights, or do I have to have them made?