Couple of possibilities. If it is really cold; possibly the lube on the action is slowing the hammer down enough to cause light hits. I would clean the action and lube with good light oil that has some friction reducing additive. You might try Winchester primers as they have been working well for me in my Omega. I also shot some Remington primers which shot well. Federals shoot good but are too hot to use with 777 powder. If this continues I would contact CVA and see what they have to offer. Sorry to hear initial problems but we all have had some one way or another.