You should all realize that muzzle blast and muzzle flash are not the same thing. Any .357 load, and especially the lighter bullets, will have a lot of muzzle blast. They may or may not have much flash. And again, this is not the same as recoil or kick. "Kick" sound like such an imprecise word that I'm surprised there aren't arguments about what kick is.
I might also mention that some writers were complaining 50 years ago that .357 cartridges were no longer loaded up to their true potential. That would also have been about the time .357 K-frames became popular. It is also interesting that the first .357 cartridges were loaded, I believe, with swaged lead semi-wadcutters.
I understand that some factory loads, especially military loads, have anti-flash additives. I read that in connection with the .45 ACP and I suppose it's true. Anyone have any experience with .357 loads that have little flash?