Like every mould cherry Lyman has ever produced, not all #358156s are created equal. Design poetry is expected with Lyman cavities. My "156" hails from the late 1970s/early 1980s, has two angled crimp grooves of similar size atop a radiused lube groove. The upper crimp groove was meant for 357-length cases, the lower groove for 38 Special case usage in large-frame 38s like the S&W Heavy Duty and Outdoorsman N-frames. Loaded long = a bit more room for 2400, don't ya know? I read this VERY early in my reloading-hobby years, c. mid-1970s, probably from Skeeter Skelton or Bob Milek. Bias alert--I have a strong preference for SWC-design castings in revolvers, and for Ray Thompson-designed SWC/GC forms.
My old shop carried the W-W Super-X 158 grain JHP from 1994 to about 2016, and I cobbled up a practice load with #358156 using 13.5 grains of 2400, CCI #500 primers, and W-W or Starline brass that duplicayed the load's performances in my 357 carry guns. E.g., both the factory loads and the handload run a 158-grain-class bullet from a 4" barrel about 1225-1235 FPS and about 1275-1280 FPS from a 6" tube. It is a SAAMI-level load, and apparently K-frame-friendly.