The problem is that APP does not tell you how to load their much touted"sticks" on their website. If you do not slightly crush the "sticks" they will not work. It is best to not even try to make them work: Just go and buy some of the excellent Pyrodex pellets.
No wonder JSG has such a bad name in the industry. Everyone who has used JSG granular powder successfully knows that you need a tight fitting sabot and you really have to lean on the ramrod. Problem is that one at APP will tell you that you have to compress their powder in order to make it work.