I've been camping, guys and just got back to see this.
Pete, thanks a lot for the links. I don't think Birchwood Casey marketed the Sight Black when I bought mine. The times they are achangin!
Ron, good tip about extra wick producing soot. I'd never have thought of that. I also never invented several things which are so simple in principle, like cruise control!
I shot the pistol a day ago. There was no problem seeing the sights as it was cloudy (pretty rare this summer). I don't expect that situation to prevail.