I've used Remington primers exclusively for the last 30 years. Never had a problem with one.
IME, most of the time misfires are caused by seating to shallow and the primer not "bottoming out" in the pocket, or seating too hard and crushing the priming pellet in the cup. Do any of your unfired rounds have slightly crushed primers?
For those who have fought for it, freedom has a taste the protected will never know!
Or at least they did before political correctness