I have been using Fed primers exclusively since I started reloading for 9mm. Well, around here, Fed primers are now non-existant so I bought 200 Win small pistol primers and loaded them up.
I could not believe how much easier the Win primers seated than the Fed primers (using Dillon 550B). I mean it was daylight and dark on the ease that the win primers seated over the fed primers. Don't get me wrong, I didn't have to "cram" the fed primers in, but the win primers just seem "smoother"
Now, I shoot a G34 in production and use a lightened trigger striker spring. Out of 200 rounds today, I didn't have one single light primer strike. I'm sold and bought 10K win small pistol primers. YMMV