When Hornady released the 9mm version of Critical Defense a few years ago, it looked like it might be a great option for my R9s. I bought a box, and boy did they cycle smoothly for me... I did have a failure to fire in that first box, but "maybe it was just me". So, I bought a couple hundred rounds for a more thorough test.
When the new batch arrived the FTFs continued; never less than 10%, and often much worse. I pulled the R9s trigger a second time for most of these, and that almost never got the round to fire. Ejecting, rechambering, and then pulling the trigger did generally work, however. The firing pin indentations on the primers looked fairly reasonable to me, perhaps a little on the light side of normal, and my gun didn't have this problem with any other ammo I tried. Conversely, CDs fired reliably in my full-sized pistols.
Around the same time I started reading here that mine was not an isolated case. Other users took it farther than me and followed up with Hornady and Rohrbaugh, and reported that Hornady was having trouble sourcing primers and that some batches were harder than others.
I was (and continue to be) unwilling to roll those dice. I really wanted to like CD, but Hornady's apparent willingness to accept such inconsistency makes it impossible to determine whether a given round will be suitable for a given gun; even if a few boxes to work reliably, how will boxes from the next lot fare?
Is there any reason to believe Critical Duty will be more consistent than Critical Defense?