Things have changed in my situation and thanks to the people who have given advice.

I was given the opportunity to buy my brother's rifle. (I know - We will see how this pans out)

It is a Ruger MK II M77 walnut stock with blued barrell. It is a .270 (I mentioned this in the other threads) with a Leupold Vari X II C and a basic plastic case.

I thought it was a decent deal ($400) as it has no scratches and has only been shot a few times. I noticed after looking at (and it was obvious) that there is some surface spots on the top of the barrell that appear to be turning or about to turn to surface rust. You can feel them when you run your finger down the barrell.

What can I or should I do to take care of these spots?

Thanks again for all your help.

Spray them with WD-40 or a similar penetrating oil, then lightly rub them with 0000 steel wool (or even better bronze wool). That light rust should come right up with no harm to the blueing.

bronze wool does not seem to be very easy to locate....at least not in the 0000 very fine grade.....

Should I exhaust all efforts to locate this...is it safer/better to use?

Try the same process, only rub it with a pencil eraser to take off the rust. It will remove surface rust without ruining the blueing.

Use a brass or bronze bore brush.