I think the Managed recoil loadings are a great idea. It makes rifles chambered for rounds like the .308 and .30-06 that much more versatile for folks who don't reload.
My Dad developed a reduced load in the .308 when I was a kid. Ballistically it was probably somewhere between a .30-30 and a .300 savage, but the core-lokt is a soft bullet (at least the .30/150 variety is) and I think it does better throttled back a little. In fact I have seen remington's 150 grain .308 factory load blow up on the shoulders of a few different deer.
That load was accurate, fun to shoot (and I shot it a lot!), relatively inexpensive to load, and killed deer handily. In fact Dad has used his .308 loaded a little on the light side ever since, and never had a problem in the woods.
Rummer