The rifle was received today. There was a muzzle cap on it. It didn't show up in the picture. I think the threaded muzzle is aftermarket, as the front sight was cut back enough for the threads. The rifle shoots .22 Long Rifle cartridges just fine. Maybe the chamber was previously opened up. The bore is nice. Would there be any advantage in running a .22 Long Rifle match chamber reamer into the chamber? I know that Winder muskets are not supposed to cock the hammer when the lever is dropped, but this one does it about 5 percent of the time. Is there an easy fix?