yep it would be with rolling B . im thinking an Enfield . just sold one this spring  but it was an Arm sport .
 it should be a rifled bore lance . very shallow and fine rifling with a slow twist 1 in 78 .
it  will shoot RB or Big heavy mini ball
 loading was done  with paper cartridges , as was the norm   for military ..  The name is deserving . Its just  basically a paper tube that holds the powder and ball . It torn open , the powder dumped down the barrel . Paper is then used as wadding and the mini driven down . Its not a shell ..
 The triggers   were pinned . As such it can get lose and wobble . I would bet he glassed  it to help hold it true to the pivot  . But you never know . It could also mean the stock has been broke 
 The part that bothers me is “renactment compeditorâ€
 What does that mean 

? is it not a shooter,,,,,, just a show piece ?
 One would have to see it