I recently had a distasteful experience with Fiocchi primers. I've been using them for a lot of years now and recently I had two sleeves of primers that had 15 "failures to fire" in the 300 that I loaded.
Talk about irritating.
I have about 4000 empty cases already primed with Fiocchi's, between the LNL-AP and the Lee App deluxe. They are working fine so far, same as always.
I didn't do anything differently with the last two sleeves at all.
Same method, same priming machines, same gun, same shooter(me). First time I've had primers that wouldn't go off. I took the duds home and checked primer depth, and they were primed about .003" under flush.
I tried to shoot them in my Shield which shoots everything I put in it. Some went off and some didn't.
So far, the same gun (Walther Pro SD with stock striker spring), and the same shooter (me), have had no problem with any of the other three bricks of Fiocchi's primers I had. I've been shooting Fiocchi's for about 10 years now and have been very happy with them.
I've been on a Unis Ginex kick for a short time now. They are softer than the last batch of Fiocchi primers I got but I haven't shot enough of them yet to get read on their quality. I know I had an upsidedown primer and just pushed it out like I always do and it looked like it had been fired by one of my Walthers when I picked it up. I can't say I've pushed out any other primer and left a dent like that in it.
I was disappointed with the Fiocchi's but at the same time, I expect that to happen from time to time with today's current production always being way behind due to shortages.
Right now, I'm just glad I have primers.