Resolution
So I received a nice little package from FedEx on Friday, and was pleasantly surprised to find that the rep from S&W had indeed sent it out and that it arrived earlier than expected. Originally we both thought it would arrive on Monday, but surprise!
So I went to the range today to test out the pistol with the new striker assembly in. Ammunition used was a mix of Winchester White Box and reloads. First the WWB was used. Standing, two handed thumbs forward grip, 25 rounds, 10 slow fire and 15 sustained fire. All rounds fed and fired without issue.
The next 25 rounds were reloads. Mixed brass, Remington small pistol primers, Titegroup powder, 180 grain cast lead bullets from Mastercast. 10 rounds with hammer pairs (double tap), 15 rounds sustained fire. All rounds fed and fired without issue.
The last 25 rounds were the same reloads. 15 rounds fired strong hand only, 10 rounds fired weak hand only. Sustained fire for all 25 rounds. All rounds fed and fired without issue.
Upon collecting the brass, the hits on the primers were definitely deeper. The hits looked much closer to what I saw on the test casing that was provided with the pistol, so it appears that the old striker was worn and causing light strikes. The new striker has, so far, fixed those issues.
The new striker also took some of the mush and creep out of the trigger. While it's not crisp like a 1911, it has improved the feel, though it also feels like it's added a .5-1.0 lbs to the trigger as well. This isn't a huge issue, and it still feels like it's around 5-6 lbs, which suits me fine as my carry gun. The reset is still soft, but it's not non-existent. The XDm still feels like it has a better trigger overall, but I'm not displeased with the way my M&P's trigger feels.
So, overall, it seems the gun is fixed. We'll see how she holds up when my local gun club starts putting on USPSA matches and I'll be able to put her through her paces more. 75 rounds doesn't seem like a lot, but she ran just fine even when I loosened up my grip to see if I could get her to fail. I'll hold onto it unless I get a good offer for it, but it doesn't look like I'll be able to afford something new for a while.
My initial experience with S&W's customer service was still horrible. What's helped is receiving an acknowledgement that they did a poor job, apology, and actual help from one of their employees. I'm still leery of their customer service for now, but it seems as though the right people are being notified and they're going to push for improving how they handle things. I wish that this had been smoother from the start, but they did make things right for me in the end, and I'm sure that the rep I spoke with will appreciate the range report I'm going to send in.
Photos