What's this "ol timer" manure?
I'll have you know I ain't reached 70 yet. :grin:
Now as far as stuff I've "forgotten" you might have a point.
It used to be I would just forget where I put the car keys. Now, when I'm looking for the car keys I'll end up asking myself, "Now, what was I looking for?" :rotf:
OK, enough BS.
Getting to the rusty bore the old brush and solvent method will remove a lot of it but with the plugged breech that keeps the brush from going all the way thru the bore it can be a pain in the U know what because a tight fitting brush won't want to pull back out of the blind hole.
(If this happens, rotate the brush while lightly pulling it out. The bristles will bend and rotate so it is no longer 'locked' in the bore.)
About the easiest way to get rid of the rust is to use a chemical along with some cleaning patches on a brass bore sized jag.
My first choice would be Birchwood Casey "BLUE & RUST REMOVER" or a similar gun bluing remover.
These are available at most gun stores and they are fairly "weak".
Weak is good because it means the base metal that is still good won't be eaten away.
Running a patched jag with the rust remover on it will speed up the process.
If a gun bluing remover can't be found try Naval Jelly.
This is a somewhat thick acid that loves to dissolve rust.
It is faster than the Bluing removers because it is much stronger.
If left in the bore for a period of time it will finish 'eating' the rust and start eating the good metal in the bore.
That's why some folks who don't like their guns shiny barrels apply Naval Jelly to the outside.
After sitting for a while it starts to eat the barrel leaving a frosted finish some like.
Just remember that once the rust is gone, all of the rust remover needs to be washed out of the bore. Then the whole barrel should be oiled to protect the bare metal.