A couple suggestions: I find it much harder to shoot that first Double Action shot accurately. The problem is the weight of the Double Action pull. This is largely determined by the weight of the hammer/main spring. The factory hammer/main spring weight (20+ pounds) in the M9/Beretta 92 is 20 pounds, and is far higher than it needs to be. Lowering that weight makes that first shot much easier to shoot accurately.
Beretta has made a version of the 92 with a much lighter hammer/main spring, and it is a version sold to a group for which 100% ignition reliability is critical: the Police. The version is the 92D. It is Double Action Only: the first shot is a long Double Action trigger pull, after which it reloads itself and decocks. Police Chiefs liked it for cops who were transitioning from revolvers to autos. The hammer/main spring in the 92D is 16 pounds, and results in a much lighter Double Action trigger pull (from about 12 down to about 8 pounds). I have an M9A3 that came with a 16 pound hammer/main spring from the factory, and it is so much nicer than a stock M9.
A US-made M9 will have one pin you have to push out to replace the hammer/main spring. An Italian-made M9 will have a slightly different pin you will have to drive out. The 92D hammer/main spring is a couple dollars.
https://www.berettausa.com/en-us/d-hamm ... g/eu00043/
It is possible to do some other things also, to improve it more. Ernest Langdon and Wilson Combat both sell slightly different improved ignition system Beretta 92 pistols, or they will sell you the parts, all of this with Beretta's blessing. Langdon apparently taught a lot of the improvements to Wilson Combat. Beretta has its new 92X ignition parts, which they will sell you in a pistol, or for you to drop in yourself.
https://www.langdontactical.com/trigger ... m9-series/
https://shopwilsoncombat.com/Wilson-Com ... tinfo/748/
https://www.berettausa.com/en-us/92x-pe ... ol/e02568/
I have had Langdon do trigger jobs on several pistols, and dropped in two of the "Trigger-Job-In-A-Bag", and with them I have gotten reliable ignition of even hard or insensitive primers with a 12-pound hammer/main spring. My Double Action trigger pulls are under 7 pounds, some are about 6.