Despite a significant increase in rate of fire over muzzle-loading rifles and muskets, Hall's rifle design suffered from a gas leak around the interface of the removable chamber and the bore, resulting in the necessity of a heavier powder charge that still produced much less muzzle velocity than its muzzle-loading competition.
Despite a substantial increase in rate of fire compared to muzzle-loading rifles and muskets, Hall's rifle design suffered from a gas leak around the junction of the removable chamber and the barrel, leading to the need for a heavier powder charge that still produced significantly less muzzle velocity than its muzzle-loading counterparts.