It has been my experience that moose , if double lunged with a decent sized ball, will drop /travel a shorter distance than a whitetail deer. A bad shot /hit however , and they'll take off through the worst possible stuff for what seems like forever. Given a well placed shot, I think they are less tenacious of life than an elk. My Uncle shot a moose every year with an old surplus Snider rifle , and then later in life, with a 30-30. All shot within a 100 yards and never lost one .
Bob nailed it, from my experience. Moose, if double lunged, or even one lunged, if not chased will lay down normally, within 50 yards of where they were hit, and die right there. Push them, however and you've screwed up royally. They then will match an elk for tough.
On the other hand, if not pushed, moose do not put up much of a fight- depends on how much you scare them, before the shot is made. If they are unaware of you, they will not go far before laying down.
An elk will go down quickly to a double lung, but for lord's sake - don't chase them. Give them at least a full 10 minutes, better yet, 15 minutes to die and stiffen up. The 'chase' will then be less than 100yards. Yes - I have heard of guys who say they lung shot elk and lost them after a 2 mile 'chase'. I don't believe that for a second - lost it after gut shot & chased it, yes. An elk of moose cannot run for 2 miles if it has holes through it's lungs, no more than you could.
A shot BEHIND the diaphragm that misses the liver - is a GUT shot. Make sure you do not over-reach your capabilities.
Most clients I have guided, thought they could out-run a moose after it had been holed.