Cartridge conversion - from 30 357 Herret
Steps to converting the 30-30 Winchester to the wildcat round 30 Herrett cartridge. 357 Herrett [PDF] 357 Magnum, 250 Yards T/C Contender .357 Mag and .30 Herrett. 357 Herrett pressures | Graybeard Outdoors Working up a load for the 357 Herrett requires chronogaphing to determine the velocity. We like to have fun as we test so we use I will admit I cheated here. I only have one video camera, so I couldn't film the shot and the hit at the same time. So these are both ...