I don't know if this will be beyond your interest but it does focus upon 17th c. artillery. There are other pages (hundreds of them) on the 17th c. Polish Lithuanian Commonwealth and its historically associated groups.
Google this address kismeta.com/diGrasse/PolishHorseArtillery.htm and click "Polish Horse Artillery".
It will take considerable time to read everything that Rick has entered concerning all phases of 17th c. artillery and equipment. Who knows? Perhaps you will find something you might want to build or have some questions answered.
Rick's bronze 2pdr "Kismeta" is featured. He built her. My "Lion's Paw" can be seen in one frame with my face shrouded in smoke. I've never cared to have my image published.
Richard "The Obscure"