No it is a FMJ, designed for 7.62X 39. I can shoot them in my 32/20, or my 30/30. They have a short bearing surface and they jack pressures somewhat in 308 bores, but are not a problem. You could never use one in a tube magazine 30/30, but in handi's they work ok for me. I was just trying it to see how it worked and looked. I would get 147 gr FMJ for subsonic loads in a 300 AAC, they are 308 dia.