9mm vs 6mm pipes

[Worknman]

Do you notice a difference between 9mm and 6mm pipes when using a charcoal filter? Do the 6mm have a tighter draw?

 

[InWithBothFeet]

I just picked up a 6mm, the other 4 of my pipes being 9 and I do think it's a little more restrictive, but doesn't affect anything. If you're used to 9mm pipes, you'll have no trouble with the 6mm versions.

 

[Hillcrest]

Do you notice a difference between 9mm and 6mm pipes when using a charcoal filter? Do the 6mm have a tighter draw?

Yes, by 3mm.

 

[OverMountain]

I can’t tell a bit of difference.