Posted 01 June 2010 - 04:19 PM
I bought most of my mortars from a fellow Swedish amateur pyrotechnician. They are very good but have some odd calibres.
Two of them are supposedly 3½" or more precise 89 mm inner diameter.
Does anyone know what size an unpasted 4" shell is? If it's less than 89 mm maybe I could use a it in the so called 3½" mortars with a thin pasting.
Edited by Pyroswede, 01 June 2010 - 04:20 PM.
"This salt, formerly called hyperoxymuriate of potassa, is
used for sundry preparations, and especially for experimental
fire-works."
Dr. James Cutbush