Nope, no problems at all with this box. 100%. The last box of Kings Mill (different lot number) had about 20% dead primers. I have to say the Kings Mill had noticeably more snap than the reloads or even the R-P 110 JSP. All the brass went into a nice, polite pile about 3 feet in diameter, at 4-5 o'clock, three feet behind me. Super easy to find it all!