Imbrog|io: The cylinder must be acting as a sacrificial annode to have that much rust on it.
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That thing [u]is[/u] SS, it's not "in the white."
If you want to make sure, two simple tests will tell if the cylinder is 303(+) SS or not. First, check for magnetism with a strong magnet, a 20 - 50 ounce speaker magnet will work fine. BUT, there could be some residual magnetism from cold working during manufacture. I think Taurus is too cheap to use magnesium, or nickel (There probably is plenty of zinc though).
The second sounds harder but it's not, & it's not expensive. If you've got a [b]real[/b] camera shop near you obtain a sheet of glossy photography paper, Kodabrome II RC is the best (Thry'll give you a small sheet for 50 cents, or nothing). Make a 5% solution of sulfuric acid, it doesn't have to be perfect (~1 to 18, or 20 of uncut battery acid, or the "good" drain cleaner is usually 10% (Red).
Cut a strip of the paper, soak it in the acid for 45 seconds and then apply the emulsion (smooth) side it to the cylinder for 45 seconds.
Remove the paper and look for a brownish stain. This indicates significant sulfur present.
Only 303 and 430F are resulfurized; 430F is magnetic.
Procedure is courtesy of Central Steel and Wire, Chicago, Illinois and has worked many times to sort suspect material.
Imbrog|io is right.
I'm 95% sure Taurus' SS "recipe" is cut with magnesium, nickel, or even zinc "to help guard against rust," make it more friendly to machine, & accept a brighter finish (And coincidentally save money). Any one of the three would explain it acting as a sacrificial anode, & all the blushing.
There is one more possible explanation - Taurus tried to pull some shit by plating the thing (It'll stick to the magnet HARD then).