I Only use Leupold Bases for my precision and hunting rifles. Depending on the application a single piece or two piece base/s. I would suggest going ahead and getting a 22 degree base/s if your ever anticipating on doing any long range shooting with your new 30-06 500+ yards or more. If not, do not worry about the 22 degree base/s. And no all aluminum is not the same! Some is much better than others as far as material, stability and quality.
The Constitution is not an instrument for the Government to restrain the people. It is an instrument for the people to restrain the Government!
Today, we need a nation of Minutemen, citizens who are not only prepared to take arms, but citizens who regard the preservation of freedom as the basic purpose of their daily life and who are willing to consciously work and sacrifice for that freedom."
-- John F. Kennedy