All this discussion about shooting moose at long distances with a precision rifle is misguided. In my experience it is irrelevant and distracting. What matters is being able to shoot quickly, accurately, FROM FIELD POSITIONS, and supported only by sticks, resting alongside a tree, kneeling, or offhand.
Your effective range is the range at which you can place all your bullets in a paper plate, quickly, with no dithering and no fumbling. The handling qualities of your rifle matter way more than its accuracy off a bench. Next most important is the quality of the bullets you're using. Deep penetrating, controlled expansion bullets are far superior to a fragile bullet that may be a little more accurate.
After your rifle is sighted in, for maximum point blank range, step away from the bench rest. Shoot only off hand, or from sticks, or kneeling or sitting as you practise. Even better, have someone with a stop watch time your response from "shoot" to the bullet hitting that pie plate. Accurate is good, but fast and accurate is better! I've killed several moose that would have been lost if I was not able to take a quick, aimed shot at the animal as it trotted across a clearing but paused momentarily before it disappeared into thick bush.
Which rifle you choose only matters if it helps you shoot a good bullet with a minimum of fuss and bother. Leave the attached bipods at home, range finders too. If you think you need a range finder the moose can be stalked closer.