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Teflon lined barrel

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Teflon lined barrel

Unread postAuthor: Doodmens » Wed Sep 28, 2016 8:51 am

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?
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Re: Teflon lined barrel

Unread postAuthor: matti » Thu Sep 29, 2016 1:24 am

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.
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