Seen these?

Look almost like the Speer Gold-Dot

Are the HP notched for expansion? Hard to tell by the picture. Is that steel case

Exactly what I thought.

Me too. That or an XTP, but those don't have a slightly angled cut like those above do. At least they kinda look a little angled in the pic.

Looks like a nickle case to me...

So probably not made by Sig, right?

Supposedly Sig is getting into the ammo business, and had designed and opened their ammo plant in USA from the ground up. The nickel color is something they call Tecnicrome ? and supposed to have less friction than normal nickel. They have several tweaks on the actual bullet and rather than having the hottest fastest load they are emphasizing bullet design. Appears they may only make cartridges calibers for the pistols they manufacture which in my mind would be a good ideal. Our local store started carrying them about 4-6 weeks ago.