Board Thread:General Nerf discussion/@comment-27306930-20190923064918/@comment-27306930-20200511201713

The perfect barrel would have the exact same volume as the displacement of the plunger tube. Accurately measuring that volume is complicated. So although it's theoretically possible to create a perfect barrel, it's much more difficult in practice.

EDIT: Improving the breach and/or the barrel ensures the maximum amount of air (and by extension its kinetic energy) is transferred to the dart. But just improving the breech doesn't solve the problem of excess air and turbulence induced tailspin. I think I talked about that way up in the beginning of this thread  ☝️