I picked up my Shield from Fed Ex this morning. The paperwork enclosed in the box indicated that S&W replaced the "Drop Safety" and "Function Tested" the firearm. I do not know if they fired it or not. There were two 7 round magazines enclosed in the box. Now I have three 7 round and one 8 round magazines. I am happy they gave me extra 7 round magazines, I prefer them over the 8 round magazines.
I visually inspected the Shield, cleaned and lubed it. I tested the trigger pull weight - 6-1/2#. I noticed the front sight was slightly to the right of center, which may cause the pistol to shoot to the left. I measured the offset with a dial caliper and determined the front sight was 0.014" right of center.
I gathered a variety of ammunition and headed off to the range. The first thing I did was fire defensive ammunition to see how it would group at 25 yards. I am not as steady as I was when I was 30, 40, 50, well you get the idea, so I rested the back of my support hand against the metal pole to steady myself. The Hornady 124g HST and Speed 147g GDHP both had good enough accuracy for defensive purposes. They both shot to the left of POA and by my calculations if I center the front sight in the dovetail, it should shoot POA.
I shot various drills with different kinds of ammunition and the Shield functioned with it all. I noticed the slide stop lever is a little stiff, but I charge the weapon by cycling the slide anyway. A full magazine is difficult to insert with the slide closed and someone with physical limitations may have some difficulty inserting a full magazine.
The last thing I did was run through a 25 round back up gun course 6 times, firing 150 rounds. The drills require head shots out to 5 yards and COM shots out to 15 yards, all under time. Each 25 round course of fire requires 4 head shots and 21 COM shots. To save space, I won't post the drills unless somebody wants them.
The cheap steel case Tula was not as accurate as I would like, but it was good enough for training purposes. Federal aluminum case 115g, Aguila 124g, Hornady 124g HST and Speer 147g GDHP all shot with acceptable accuracy.
Attached are a few pics. I am certainly no Photographer's Mate, but I managed to get a few shots in focus. The 25 yard Hornady HST group was 1-5/8" H x 2-5/16" W center to center. That is the load I intend to carry.