Sadly, I haven't carried 40 cal in quite some time. My Current EDC a Commander stoked with Norma MHP 175 gr. Or (if I'm dressed lightly in shorts/T-shirt) a Sig 365XL and Hornady Critical Defense 115 gr.
Seems like all the articles concerning 40 S&W show 140/180 round performance. Has the 165 grain load died completely. I've been retired from LE 18 years now. While active as a detective, I carried a Sig 229 40 cal with Cor-Bon 165 grain ammo.
My son and I purchased 2020s in March of this year. So far, 50 yard accuracy has been inconsistent. Many good groups are ruined with a flyer. We've tested probably 12 different brands of ammunition to date to include a number of Eley options and consistent accuracy is an illusion...
I had that happen with a smith Shield in 45. I couldn't fire 30 more than 30rounds before my trigger finger was so sore I had to quit. An APEX trigger cured it.
Practice, practice, practice at the reasonable ranges for the compact pistol you'll carry, 7-10 yards. You'll gain confidence with the pistol and improve your shooting to the point you can put all your rounds center mass.