Hey all just bought my first revolver it's a brand new 686 6 shot with a 6 inch barrel. I've only fired 50 rounds through it and cleaned afterwards. While dry firing I've noticed that the double action trigger is normal most of the time but there are random trigger pulls where there is a resistance at the beginning of the squeeze and then a hard release, almost as if a piece is internally getting caught up on something. It does not happen on any specific cylinder; its completely random. I took a video but don't think i can upload it here.