What good is .357 158-gr. JSP?
I have owned, shot, handloaded for and hunted with a 3-inch M66, a 6-inch M28, Contenders in .357 Mag and Max, and both Rossi and Marlin .38/.357 carbines for decades, so I know a bit about this subject.
Many of the loads in the Speer #8 and #9 reloading manuals...