2-piece bases.
you can go w/ the tried and true weaver system. inexpensive, ugly as sin, but works, and has done so for decades.
you can use the leupold std system. a good choice, especially for perfectly centering a reticle in the scope, and has worked on all my rifles up to and including the 338 win mag without fail.
the talley lightweights are an outstanding choice. mount cleanly, and no worries about the bases - it is integral to the ring (my favoritest mounting system). (you'd want the mediums)
leupold dual dovetails are built like a brick outhouse. and this list can get very long, actually, because we haven't discussed conetrol, burris, etc etc, nor have we discussed all the variations each maker has. so...
get the talley lightweights in a medium and be happy. failing that, get the leupold std (2-piece) w/ medium rings.
