Teflon lined barrel

[Doodmens]

Hello,

I noticed that teflon and steel have a very low friction constant (0.05), and I was wondering if you could line a barrel with teflon (or make a barrel entirely out of teflon) and reach higher velocities than with a steel barrel (friction steel vs steel is 3x higher than steel vs teflon). Has anyone ever tried this? Or would the effect not be noticable?

[matti]

Unfilled teflon (ptfe) wears quite fast and is pretty soft, making it not suitable for barrel.. better way would be teflon sabot or sleeve on the projectile.

I don't think barrel friction makes lot difference unless it's very high friction or if the barrel and projectile is galling or projectile jamming.