well I shot it a bit, very happy with it. only about 30 yards, more test firing than not. .530 Hornady roundballs, oxyoke prelubed patches, 70 gr +/- fffg of 5 or 6. maybe 10 year-old goex----5 shots in one ragged hole right at the aiming point. Barrel is TOTW's Colraine round bottom rifling substitute for their french trade gun barrels.
I'm not happy with recovered patches. all showed perforations at the rifling. some were more that frayed a bit around the edges. I suspect that I need a tougher grade of fabric, maybe real linen or a tighter woven cotton twill.
Also something I've never seen before today. It's cool, maybe low 60's and very humid, I was shooting between spates of drizzle. on after shooting cleanup my first real tight cleaning patch pulled out some brick red fouling.
what causes red fouling? Maybe I should put this in the BP shooting area