They will shoot, but your going to be blowing gas all around them. You can buy .310 and .311 bullets if you want to reload your own. I have loaded all of my own riflw, handgun and shotgun ammo since the 1960`s, but when I bought a 7.62 x 39 that was built with a mil. pull off barrel I started shooting boughten ammo in it. The accuracy was at least as good or probibly better than what I loaded and I could buy the ammo already loaded for less than I could load it.