Slip 2000 is the best way to remove that residue and keep your chokes performing at their best.
Slip 2000 is non-toxic, non-hazardous, non-flammable, & biodegradable. Best of all, it's effective.
Simply shake the jar, drop your chokes in, & allow them to soak. You can soak them for a couple of hours, overnight, or even until the next time you go shoot.
The chokes are made of stainless steel so you don't have to worry about the cleaner harming them. (Don't use this product on chokes that are blackened, it will remove the finish.)
Once the chokes are done soaking, pull them out & brush them up with a brass brush or even an old toothbrush and you're ready to go.
Slip 2000 makes the job of cleaning up your chokes a much easier task.