on dodging torsos, or bobbing heads (around cover) at more than 300m. So all you are doing, by "opening up" on attacking groups, at longer ranges, is making them slow down, use cover, etc. At your first few hits, they will back off, wait until dark. Then they will easily overwhelm you, before you can hit at most a dozen of them. So just how MANY rds of 308 are you going to NEED, to "defend the retreat", hmm? At most, a 30 rd mag,on any given occasion. If you need more, you are going to lose, because there are just too many of the enemy, or you are missing too much. In either case, you lose.