Originally Posted by unfated33
Increasingly in the process industry we're seeing shortened pipe lengths being used with a flow conditioning insert to force the flow into a set pattern. I've been curious if conditioning between the bolt and the feed would improve consistency, but I don't know enough about actual launch conditions to know if it would make things better or worse. Plus it'd either need to be attached to the bolt or the bolt wouldn't be able to push the paintball forward before firing.
The venturi bolt design is similar to some flow straighteners. While they may straighten flow, they should still cause some additional flow loss. You could make a cocker bolt with a vortab layout inside, that might be interesting.