I haven’t tried them yet just wanted to see if anyone has had any issues I was reading and only really found one person that had a problem but wanted to double check to see if anyone else had any problems
My gun is a Knight UL, but I've had a few issues with them. With a fairly stiff charge of BH209, extraction can be a little difficult. If I clean and put some Hornady 1 Shot in my breech plug every 10 shots they're ok. I've had a couple pierce the cup as well. Aside from that they're ok, no misfires and they seem to seal up well enough.
My buddy uses them in his T/C Omega. He likes them because they are sealed from moisture. He has not had any issues with them in the past 4 - 5 years that he has been using them.