Incidentally, after fumbling around Canadian Tire for a while this weekend (the help is useless at my local), I could only find a couple of products and picked up some Mothers® Billet Metal Polish.
Gave this a whirl on the front of the cylinder, under the top strap and forcing code etc. and it works quite well with minimal effort. It's a bit addictive, mind you, and had to be careful not to proceed to polish the entire pistol to a high SS gloss!!
And Oh... my wedding band looks practically brand new and now I feel like polishing my keys..... (I told you it's addictive - and I don't even have a buffing wheel of any sort!!)