Unlike an arrow, the rifle which fired a minie ball projectile was fully capable of piercing through a knight's hardened steel breastplate, let alone a common brigandine. Even the muskets fielded by Berengar's militia were capable of such a feat, albeit at a severely reduced distance.
Webnovel
Arrows can and do pierce armour, the difference between the bow and the gun are the amount of experience needed to be useful in battle. This would let armies be produced from peasents rather than training an archer battalion from birth.
Unlike an arrow, the rifle which fired a minie ball projectile was fully capable of piercing through a knight's hardened steel breastplate, let alone a common brigandine. Even the muskets fielded by Berengar's militia were capable of such a feat, albeit at a severely reduced distance.
Tyranny of Steel
History · Zentmeister