I just had to test it now for the sake of sciense: 7,62x39 S&B brass, CCI LR primer did push Lee 90gr SWC out from brass 3/8" to the barrel.. Added 0.6gr VV N310(=Reddot) and boolit came out complety. Shot it to pillow and only rifling marks. Rifle was single shot Baikal with 16" inside chromed barrel from lightmachinegun.