When shooting my new Blackhawk yesterday I had two rounds that did not go boom. Repeated attempts only left me with two duds. I believe this particular 'run' of reloads has some old stock green & white box CCI primers from the early 70's I was given a while back. I have been using them but it was ironic two were FTF in my new gun and within a couple cylinder fulls of one another. Hopefully they will be the only two. It was just odd it happened with the new gun.