I'll also say to stay away from any 357 Mag rounds lighter than a 140 grain bullet with your model 19 too. As for more moderately loaded 357 factory ammo, I've found that the PMC Bronze ammo with 158 JSP grain bullets to be on the more moderate side. The Fiocchi 158 grain stuff is definitely loaded hotter than the PMC Bronze. And if you reload, you can tailor your ammo to whatever you want, even loading down to 38 Special levels.