I was recently given an old Remington model 12 pump first models produced in 1906?,.22 rimfire rifle, it was a basket case, ( handed to me in peices), and had been badly neglected as far as cleaning was concerned. The wax from the bullet lube had compacted into crevices to the point where you could not determine where the metal stopped and the detrius began.
In cold weather there was no way that this rifle could perform the action that it was designed to do, eject, replace,and fire the next cartridge in the magazine. As a matter of fact I have no doubt that was the reason the rifle was disassembled and left to rust in the bottom drawer of the chest of drawers of which it was found.
I dug out the impacted wax , and washed the small parts in solvent, along with removing the wax from all the nooks and crannies within the reciever.
That done the rifle was reassembled, with a replacement (made from a balll point pen spring) for the missing trigger return spring, was found to fire and function perfectly even with the takedown screw replaced with a 5/16" stove bolt!.
There is no doubt in my mind that this old shooter was laid to rest, only for the reason that it was neglected.
Most firearm owners were raised with the values that ,the said arm will pay back to the owner the same care that it recieved.