Most of those $200 dollar kit guns have barrels that are button rifled. The rifling grooves are swaged, not cut, by a carbide "button" that is pulled through the barrel by a powerful hydraulic press.
They have shallow grooves and can't easily load oversized ball/patch combinations that can easily be loaded in Green Mountain barrels with their deep cut grooves.
They have shallow grooves and can't easily load oversized ball/patch combinations that can easily be loaded in Green Mountain barrels with their deep cut grooves.