308/7.62 Nato. If I had to choose 1, and only one. I live on the outskirts of suburbia, surrounded by woods and farms. Some mountains not too far away. I love my Vepr 308, and 308 is common, the 7.62 Nato round is used by military, it will hurt up close, will hurt far away. Will cover the distance, and punch thru barriers and brush. I have a bunch stocked up, and while the recoil is more stout than 5.56 and 7.62x39, not unbearable.