Taz, I may be way off on this, but I've heard that some mfgr's will season the barrels on the muzz-loaders before they are put on the gun rack for new sale. I heard that Knight is one of the few mfgr's that actually do this.

Either way, you may want to shoot a couple rounds with either a round ball or buffalo bullet just to make sure the grooves and landings have no bur's. The plastic cup on the sabots will not season the barrel as quickly as lead to metal will.

Again, I may be way off base on this and I'm sure there are others on this site that know much more about this than I do. Just my 2 sense worth.

Kenny.