For personal defense I use Win 158 sphp +p's in both.
I have a box of hand loads for hunting as I recall their 140gn xtp's over H110. These days its a LEE 358-158 rnfp over 6.5 Unique for the. 357 the 38 gets just 5gns.
I thought about working up another load for the .357 but it shoots so well in both my Sec6 and the carbine that I see no point. It turns in 1140 in the pistol and 1520 in the carbine.