So, I'm trying to standardize my rifles/ammo for SHTF purposes. I have a 5.56, 7.62x39, and a .308. The .308 is definitely staying, but I'm debating on the 7.62x39 or the 5.56. I don't want to have too many rifles to stockpile ammo, and would like to sell one of them to fund ammo/accessories for the other battle rifles. What is most practical in your opinion?