Are you loading a Pyrodex pellet and then a Triple Seven pellet?

Drop the pellets down the bore first. Then put the powerbelt into the false muzzle of your rifle. With a short starter push the powerbelt down as far as you can. Then with the ramrod, with a good steady slide, push the powerbelt down until you feel it snug up on the pellets. You are now ready to fire once you put in your 209 primer.