Definitive Barrel Length re Velocity Test

[BillK]

https://www.pyramydair.com/blog/2017/12/crosman-2400kt-co2-air-rifle-part-11/

Parts 10 & 11 deal with barrel length.

What he calls the "power valve" is a base 2240 valve.  The other is a 2300 target pistol valve which is a lower power/higher shot valve.

Re 13xx the numbers will vary but the principle is the same.  Longer barrel=more power/FPS.

Accuracy is determined by the quality of the barrel, not the length. 

[ped]

might finally put the old 18" is the optimum barrel length to bed quote you see so often