Welcome to the forum Rideflhtc.
I love loading 357Sig & use bullets originally designed for .380acp. I like the light & fast
aspect of the 357sig rd., & use 90gr Hornady XTP's, & load pulled factory rds. like Winchester Silver-Tips, Federal HydroShoks, Remington Golden Sabres, & CorBon JHP's since I can't seem to find them for sale to the general reloading public.
My pet load
is 11.3gr of Power Pistol under an 90gr HydroShok moving 1733fps. W/ 600ft lbs, the 357sig (for up close S/D) makes perfect sense to me.
Normally, I use +P 45acp but where I live prohibits the extra penetration of the bigger slug.
Check out this link for 357sig recipies;
The number of loads listed @ the site have doubled
in the last year.