Assertion: projectile | /r/HasSubevent | greater pressures
Facets:
value: in the breech
type: LOCATION
value: vastly
type: DEGREE
Source sentences:
text: Rifled weapons had to be stronger than smoothbore because a greater stress was inflicted on the gun by a tighter seal (less windage) necessary for the projectile to take the rifling, resulting in vastly greater pressures in the breech to overcome the friction between the projectile and the rifled bore.