As we know, rifled chokes can torque themselves silly hard tight. Gunsmith-tight.
I got bored with opening the 20 gauge 870 choke all the time, cleaning, opening again... I tried some "antiseize", it got tight quick... I then remembered my Agua-Lube bullet sizing dry lube by Hi Tek, the coating maker.
That was last winter, some 500 different slugs ago. Many were full bore. I remember I sprayed the choke threads twice, letting dry after the first coat. Then screw on and shoot for a year.
And now I just opened it with the standard key. Glove hand tight.
You dilute this in lamp oil (kerosene) , I use 1 ml / 1 liter. Spray on. Do not spray on floor...