Your Dickinson has chrome-lined bores. Most of the newer made O/U guns from Turkey and Italy have as well. Chrome lined bores are extremely corrosion resistant. I have never seen corrosion in a chrome lined bore, regardless the amount of abuse or neglect. The outside surfaces are another matter.
IMO your vintage guns need more attention than the newer made guns with the corrosion resistant finishes. I have often found that certain guns of mine need more rust protection than others, I believe due to the type steel they are made of..
I don't obsess over them. Even my Perazzi doesn't get a thorough patch-and-solvent bore scrubbing after every use. It has never developed any corrosion, in about 15 years of use. I care for my guns, but I'm not anal about it. I can see no sense in cleaning a clean gun before using it. If it's clean and protected when I put it away in it's case it will be ready to use when I take it out. I don't use heavy grease in the bores for protection, so they need no attention before use. An exception to this is my hand made m/l rifles. Their bores are protected with RIG, and I thoroughly clean all that out before using them. Rivelling in a shotgun barrel can occur, supposedly, from firing with too much residual oil/grease in the bore, but with the newer, high tech oils we I now use I cannot imagine it ever causing a problem. Guns are often terribly over-lubed.
