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!
America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves.