Agreed. Metallica's tone is highly-processed, not like the simpler, more direct rigs that many local musicians stick to. Nothing against having racks and racks of processors and pedals and all those funny gadgets, but Metallica gets its tone from a lot of in-betweens, so you'll be hard-pressed to get the exact same rig. They have the mullah...
For something similar, it's really all in the equalizer settings. How you set your bass, mids, treble, etc. If you ask me, why copy their tone? Why not get your own tone? :mrgreen: That way, it is truly 'yours'.