was a medium cannon
similar to, but slightly larger than a saker
and smaller than a regular culverin
developed in the early 17th century. Barrels of demi-culverins were typically about long, had a calibre
of and could weigh up to . It required of black powder
to fire an round shot
. The demi-culverin had an effective range of .
Demi-culverins were valued by generals for the range, accuracy and effectiveness. They were often used in sieges for wall and building demolition.