Slingshots in a Medieval Battle?

Jörg Sprave pulls out a slingshot with a 2m draw that puts 20mm steel balls through ply wood. Interestingly rubber could have been made in medieval times and this is clearly a seriously powerful weapon, so would they have used it? If you would like to help support the channel please visit my sites ​​ for excellent budget historical weapons ​​ for custom historical work and for T shirts and merch please visit ​