glwenzl, no they don't make smooth bore 357 rifles, if it is a smooth bore it is called a shotgun, CCI makes a 38/357 shot shell, i have five boxes of them in i think #7 shot, i shoot them in my 357 for snakes, the ones i have, have a blue plastic cap with the shot loaded into it, they shoot good in my model 686 pistol, never shot them in a rifle.