This is my first post here so I want to say Hello to everybody.
In Polish Army Museum (Muzeum Wojska Polskiego) in Warsaw, there is a leather cannon (or maybe 2) taken from Swedish troops. There is a 17th cent description of this gun written in 1629. My friend found it and post on his blog:
http://kadrinazi.blogspot.com/2010/0...obleczono.html
It is in polish so here is my rough translation:
"His Majesty was watching 2 leather guns, that among others were taken from Swedes in a battle. The barrel inside is made from gunmetal, cast, tin at mouth and thick at the bottom. This barrel was tight wrapped with thick, tarred rope, Whole barrel was then drenched with tar and wrapped with leather. This machine is a size of a good field gun, and so light that only one (even poor) horse can pull it. You can shoot it like real metal gun. Some say its Adolphus Gustavus own invention, the others that its Philip Mansfeld's, it was made for fast moving while marching."
On my friend blog there is also a link to Davida Stevenson and Davida H. Calldwell work:
Leather guns and other light artillery in mid-17th-century Scotland