.357 Magnum rounds. Left: Jacketed soft point (JSP) round. Right: Jacketed hollow-point (JHP) round. JSP is a semi-jacketed round as the jacket does not extend to the tip.
1.-Weltkrieg Propaganda Darstellung französischer Dum-Dum-Geschosse ca. 1916
6.5 x 55 mm fully sheathed¹ [full metal jacket] ammunition before and after firing, penetration and sponging² [expansion]