30-30 Win Fiocchi Field Dynamics 150gr FSP Interlock 2390 fps 20rdsClassic . 30 30 Winchester Hunting Loads Fiocchi Field Dynamics The Fiocchi Field Dynamics . 30 30 Winchester 150 Grain Flat Soft Point at 2,390 FPS is a reliable, economical hunting load for one of Americas most iconic deer cartridges. The flat soft point (FSP) profile is the traditional . 30 30 bullet design safe for tubular magazines in lever action rifles while still delivering controlled expansion and adequate penetration on whitetail, mule deer,