What will have better performance???

[jsefcik]

, Chamber then barrel or Chamber on the bottom and barrel on top,

[mattyzip77]

i dont think that it would matter, why would it???

[jsefcik]

Air Flow maybe?

[Gun Freak]

It won't matter but theoretically the flow is better on an inline. An old member Clide built an inline piston valve and saw no improvement over a normal over/under piston valve. But, the compactness of an over/under allows use of a longer barrel and chamber while still retaining the same overall length as the inline counterpart, which very well makes up for the tiny bit of performance lost due to the bend in the air flow.

[i-will]

Pretty vague question.

[saefroch]

Doesn't matter, really. Technician1002 will probably say something about the flow restriction through the bend between chamber and barrel due to the bend, but it's almost insignificant.