Thank you all for the replies. That being said, I'm through testing this Sig. I've spent enough time, valuable powder and primers that I'll take what I've got. I am satisfied that I've been through enough bullets, COLs and loads of different powders not to mention the purchase of a 1000 new Starlines, that I've covered enough of the gamut of possibilities. I think I victimized myself over the years into thinking that the P 210 was the ultimate and in the long run if you wanted a target 9mm without going to the custom built stage or buying the overseas model, that this was the way to go. And I still think it is an excellent pistol. The good groups, all shot from the bench through a red dot site at 25 yards, range from just over an inch to 2 inches if you throw out the occasional flyer which, I think, was from yours truly and not the gun. With that said, I have two nines one of which shoots better than the Sig-an STI 6" barrel and another, a CZ CTS, which can shoot as well as the Sig and both having better triggers than the Sig. (I have found that the Sig does have an excellent, smooth and light trigger but the pull is way too long and even from the bench may be the reason for not having a smaller group size or possibly fewer fliers.) The fit and machining are obviously excellent for a "store bought" pistol.
With apologies to this group, I will be posting this to another group that I participate in since I'm a lousy keyboarder.