Minneasota, don't be skeered of the Damascus Guns.
Most of thos stories were started by lawyers for the ammo and gun companies.Just look at the quality of the gun, the bbls etc.
Remember, most black powder loads had higher pressures than moderate smokeless today, particularly the Rio,Keman types with progressive powders. Eg. Reo 2 3/4 x 1 oz trap are about 7100 psi.