WELCOME to the "REAL WORLD" :hatsoff:
Out here in the PNW, we do very little Re-enacting. I have shot very few "blank loads".The ones I have shot were for "public Demos, where live ammo would be a hazzard or illegal.
@ our Rondys we have matches that are called "Trade Gun" You do not have to use a "trade gun" BUT it MUST be a flintlock, smooth bore, no rear sight & pre 1840s. I use my Ped. Mortimer w/ it's 13ga. bbl.( appox. .72 cal.). We see "Besses" also.
Are these "smoothies accurate ?? YUP. They are not "target guns" & even my BAKER is more accurate, but up to 100 yds they get the job done. ( note there are several shooters, that reg. participate, that reg. hit @ 200 yds.
As to the impact, with a "battle charge, they will lay a 1" thick gong out horizonal.
As to damage to the human body, read the grievouse injuries , that got hit by a "Bess" ball.
IMO, ANYONE who doubts the effect is an IDIOT, IMHO
I HOPE you will get to continue to Put your Bess through it's paces with LIVE Ammo.
Puffer