I have an original BLR with a steel receiver in .308 Winchester. Great gun. I hope I never lose the magazine -- they are pretty much unobtainable.
It used to be that Americans loved .30 caliber cartridges. You have the .30-06, the .308 and the .30-30. You also have the .300 WinMag, which was also used extensively by the military!. In all this talk of the .308 spin-offs we may have neglected to mention that for many the original .30 caliber round is still the best of all.
Certainly if you want cheap ammo it is the way to go.
I hope to get a BLR in .358 Win someday, for an all around woods rifle. It's been on my list for a long time, the number of variations makes it hard to choose sometimes.