I'm a fan of bolt 308,the 06 is probably a little more versatile, especially if you reload; but factory loads covers the gamut of needs as well. As far as actions, what's comfortable to you, the BLR comes in most calibers as does every other action. I cant complain about the ones I've owned. My eye site is good and I use the low power on just about every shot mostly as an aide rather than as a magnifier, 1.5-4x has covered every need so far. I just think it's great we still have the problem of SO many different choices!