While I've never had this problem with any of my BPI guns I would give several brands of primers a try before giving up. Also the position of the breach plug is a potential fix. Try it without a load with the BP all the way in and snug, thenback it out a quarter turn at a time until it fires consistently. I don't particularly care for this type of fix but it should be safe (many back thier BP out a quarter turn or so to keep it from siezing) and will allow you to hunt with it this season. If the BP position seems to fix the problem I would suspect that the BP to barrel fit was settoo deep from the factory and it needs to be addressed by the manufacturer. Good luck with it.