Reply To: Barrel length vs accuracy
This discussion could go a variety of ways, as there is both good and bad information presented here.
No matter the means of propulsion, there is a penultimate length. That length depends on the caliber, weight of the bullet or pellet, the force behind it (air or gun powder), twist rate, and even the ballistic coefficient of the projectile. And I should add, about a dozen other variables.
We also must take into consideration the difference between bullet and pellet. Bullets are spin stabilized, and pellets are both spin and drag stabilized. And airguns may shoot one, the other, and perhaps both further muddying the waters.
The bottom line is, length matters, but it is only one single, perhaps fixed, variable, not the whole gambit!