Originally Posted by TooStrongTerry
No ^^^ this is what I mean. There's a wooden plug inside. I have to remove it. Wolf I've tried everything...its not budging. Might have to take it to a gunsmith
Nah. Get the dowel loose if it is stuck. it is supposed to be in the middle of the spring. With the barrel removed hold it butt up. U should see it there in the barrel stud screw hole. Shake it a little back and forth in this position. No luck with it falling out but see it? Get a sharp pin and move it thru the hole till it is centered and falls out. STILL no luck!?
Liberally spray the mag tube at the receiver with WD-40 and let it rest overnight tube UP. Next day, put one of those fan belt wrenches/bottle openers on the tube near the receiver (do not put the wrench on an oily tube) and slowly turn the tube out. Be careful of loaded mag spring! Remove dowel. Replace spring, follower and mag tube.
Go to range. Load five, yes FIVE, American made 3" magnum shells in the tube and fire them out. Relish the last two as they are two more than the standard Remington 870 will take no less cycle reliably these days!