Originally Posted by
Big Uncle
If it is the Express model you might want to polish the chamber a bit. One of mine did not extract smoothly until I polished out some sort of crud that had been left during the manufacturing process. Some fine steel wool on a wooden dowel did the job. Just pull the barrel off and polish the chamber - not the barrel.
+1
My daughter's boyfriend has a new 870 Express and had the same problem extracting shells. I did the "dowel rod & ultra fine 0000 steel wool" trick along with some gun oil, and polished the chamber for him. Voila! Problem solved, and his 870 functions perfectly fine without skipping a beat.