I cant believe that I held this magnificent rifle in my own two hands!

what a wonderful experience , thankyou for sharing . does the chamber get cold to hold , does one need a glove ? ?
and where did dry ice come from in those days ?
Actually it wasn't 'dry ice' it's a chemical reaction... Carbonic acid is a chemical compound with the chemical formula H2CO3. The molecule rapidly converts to water and carbon dioxide in the presence of water. However, in the absence of water, it is (contrary to popular belief) quite stable at room temperature.[4][5] The interconversion of carbon dioxide and carbonic acid is related to the breathing cycle of animals and the acidification of natural waters.[3]

My Grandfather had a Carbonic Cannon, sadly when he passed his kids got rid of it, I remember it in the basement when I was a wee lad a long time ago. It would have been a gas to play with,..no pun intended.