Single sided porting

[Toll]

In theory, if there was to be porting on only one side of the barrel what would happen to the ball as it exited? Would it just be flight as normal or would the air moving through porting act on it in a detrimental way?


I've been curious for a while now about it and working it into a dream build of mine as a way to silence the marker without the need for an attatchable muzzle based silencer. No one could claim I was intending to silence a fire arm with it since the way it would be drilled in would completely screw the rifling in the barrel up

[Frizzle Fry]

Bob Long once offered an "undershot" barrel... Had two lines of porting along the bottom, and was adjustable to allow the "bottom" to always be the bottom. It was, in theory, supposed to have the same effect as the tippmann flatline. Clearly a case of R&D minus the "D" because the ONLY thing it was good for was rainy days; rain on the barrel without leaking in the porting.

[Spider-TW]

I agree. It should have some effect like a flat line, but not controlled enough. Flat lines are not noted for accuracy and they have grit and a severe bend to make the spin. I expect a semi ported barrel to be semi accurate and give semi improved distance.

To try it, I would take a ported barrel and duct tape one side. You would have to give credit for the unused porting holes causing extra friction, but you could see the kind of effects and consistency you could expect. I have some useless paint that I might try that with.

[Bagheera]

In theory, if there was to be porting on only one side of the barrel what would happen to the ball as it exited? Would it just be flight as normal or would the air moving through porting act on it in a detrimental way?


I've been curious for a while now about it and working it into a dream build of mine as a way to silence the marker without the need for an attatchable muzzle based silencer. No one could claim I was intending to silence a fire arm with it since the way it would be drilled in would completely screw the rifling in the barrel up

The only effective claim I've seen so far that makes sense in the whole report reduction thing is reverse angled porting, and Hammerhead makes their barrels with this sort of porting.

[Toll]

In my case it is going into a bolt-action sheridan design where the fore end of the stock (about 6 inches worth) is going to be hollowed out and replaced with some brillo pads/those tacky mat things.

I figured if I had the porting going straight down into the sound dampners so the air couldnt escape elsewhere it would lower the profile of the shot going off