On my M70 Classic Safari Express (375H&H) I am using:

Front - "Weaver Grand Slam all steel top mount base" #S46 part # 48227.

Rear - "Weaver Grand Slam all steel top mount base" # S49A part # 48244.
both are matte black in colour.

Rings Burris "Signature ZEE ring 1" high matte black part # 240531.

Scope: Leupold VX III 3.5-10x40mm Part # 55046 matte black duplex recticle.

The weaver style base and ring system are not exctly quick release as in flip a
2 levers and pull. But it should in theory be able to return to zero when reinstalled.
It's very strong the weak link being the four 6-48 machine screws that hold
the bases on the receiver.

The signature rings are the best (if your not going to reem the rings true)
you won't get any scope ring rash with the plastic swivel bearing inserts in the rings.