After lurking in thousands of posts over the years, your question here finally got me to create a damn account. How about that.
Same MSI B350 Tomahawk, same Corsair LPX 3200 2x8GB ram sticks here. Here are the best timings I've found so far, though I'm still finding 3200 elusive. These timings are surprisingly tight, though, which makes me feel better about not hitting 3200.
2666 @ 14-14-14-14-32, 1.36v
2933 @ 14-16-16-16-32, 1.37v
5 timings are listed because the MSI Click BIOS 5 separates tRCD into Read and Write components, unlike the Corsair labels, which just say 16-18-18-36. And note the 1.37v on the 2933 speed, just to make sure it runs stable. Let me know if one of these works for you.