#1....CLEAN IT!!
#2....repeat #1
#3....repeat #'s 1 & 2
#4....repeat #'s 1, 2 & 3
#5....repeat #'s 1 through 4
Well if said veteran hunter's advice was adhered to by yours truly not one of my guns should work? Plus I am sure every one of them would now be a "fixed" choke screw choke barreled gun!! I use gun grease on my chokes. I put a very light coat on with the type of brush you paint a model plane or car with. Now if I have neglected to clean my gun after a few hunts and I have shot lots and laid in dirty fields I use a toothbrush to scrub the action parts clean, bolt, trigger assembly, bolt slide,receiver interior, gas piston and mag tube. I usually clean with something like mineral spirits or varasol by dipping the brush in them and after cleaning use a can of compressed air to clean away the cleaning solution since I do not have an actual air compressor. I also do the same with the barrel lug and I use a tiny drill bit that will fit the gas ports and clean them by gently turning the bit by hand and working it in and out of the gas port. I make sure its not big enough to grab any metal, just remove carbon. After all the working parts are cleaned except the barrel lug and gas ports I spray Rem Oil on the bolt assembly, trigger assembly, receiver inside then once again use compressed air to remove the excess lubricant then use a clean soft rag to wipe all the parts thoroughly. I use a rag with a slight bit of Rem Oil applied to it to wipe the rest of the gun down, barrel, receiver, mag tube, piston, barrel lug etc.
For an avaerage cleaning at days end I put a bit of cleaning solvent on a rag, wipe everything down good, dry it with a dry rag then apply a bit of Rem Oil to a clean rag and wipe everything down with that.
And after year of hunting my guns still look good and function 100%