I've been experiencing that with remington kleenbore primers with pyrodex rs as the main charge. I can hear the primer go off and then the charge. I switched to CCI primers and was back in action. I also noticed the "kleenbore" primers gave me a horrible amount of blowback and fouling. From now on im sticking with all the older "original" stuff. This new and better stuff they come out with each year is alla scam that takes care of one problem and then leaves you with another.