View Single Post
  #4   Report Post  
Posted to rec.crafts.metalworking
john B. john B. is offline
external usenet poster
 
Posts: 897
Default Uses of "structural tube" with thick walls

On Wed, 06 Feb 2013 22:11:54 -0500, "Michael A. Terrell"
wrote:


"John B." wrote:

Call Steve, he's trying to build a cannon and 6" pipe with 1" walls
might be just what he wants :-)



That's just a medium sized pea shooter. ;-)


That is approximately a 32 pounder. About 1450 Ft/Sec. velocity and a
224,000 grain bullet. I'll leave it to you to calculate muzzle energy.
--
Cheers,

John B.