.357 Round is improperly named. Should be .357 Magnum Round. The .357 Magnum cartridge is essentially a lengthened .38 Special cartridge used in magnum revolvers. The term "Magnum" is used to distinguish when an existing cartridge has been extended to hold more gunpowder to increase bullet penetration and stopping power. Currently is named just .357 Round but is in fact actually a .357 Magnum Round determined by its length and diameter.

Edit: I also noticed that the model show that the primer has been struck which means the bullet has been fired. But these are suppose to be unused rounds. {F29493}