I didn't check your load info, but the crimps look good enough to start with. I also think you could back off on the crimps with Unique. A stiffer powder like 2400 might require a medium crimp.
I bought some .357 brass so I wouldn't have to deal with going back and forth with .38 special and .357 magnum.
Not saying I won't, but I have several hundred of the longer brass that I might not ever use my .38 special brass. I have a very nice recoil Bullseye load that I might just try in my Ruger SP101. Unique much to my surprise had a bit snappier recoil than the Bullseye load I tried.