Nick has some good points and what I would have echoed about the heavier-than-usual bullet in Marshall's specific load. Other than Marshall's 185gr. bullet, I would not use standard primers in the .357 with H110/WW296.
That, and again, the Win small pistol primers seem to be pretty hot for a standard primer.
That, and again, the Win small pistol primers seem to be pretty hot for a standard primer.