Most any 180 grain hunting bullet out of an '06 is more than adequate for any moose or black bear that walks. The 180 Interbond , as well as the standard 180 grain SP Interlock, are good choices. The 180 grain Nosler Interbond and Swift Scirroco are also good choices if your heart is set on a bonded bullet.
The "X" bullets may penetrate deeper than a lead bullet but it will also leave smaller entrance and entry holes. With a big animal like moose the larger the wound channel the quicker they will bleed down and drop. An extra 100 yards of travel with moose often lets them get somewhere you don't want them to be like into the water or under a pile of deadfalls.
