If anyone was wondering I thought ide post it. found out what the system was.
The PAS (Projectile Alignment System) is one of the secrets why our barrels shoot better than our competitors. We bore out only 3/8 in the end of the barrel to allow the projectile to be aligned perfectly with the rifling each time the muzzleloader is loaded. Because we only take out 3/8 of rifling in the barrel, this allows our barrels to shoot consistently better with a variety of powder charges and different projectiles.