Improve firearms: rifled barrel

Improve firearms: rifled barrel is an upgrade in Cossacks 3, available at the Academy.

Background
Firearms were developed and improved rapidly in XVII-XVIII centuries. Thanks to inventions in this sphere, firearms became lighter and more effective, and gained better accuracy and range of fire. Rifled handguns - carbines - were added to arsenals; these firearms possessed much greater range of fire. Large-caliber buckshot handguns - blunderbusses - were effective at short range.

Effect

 * Fire power +10%