Just curious, as I've never hunted elk or moose, but, from what I've read, I seem to recall that while moose are bigger, elk are tougher. Has this been your experience?
Elk are probably the toughest hoofed animal in the world to bring down and that is just my experience with them. Hundreds of thousands of Moose are killed in Europe with a 6.5x55 or 30-06 type cartridges. My concern with a 25 would be hitting bone and moose have big bone. If you picked your shot and were in no rush it would surely ventilate them as well. Tons of moose are killed with 30/30's,35 remington and 06 in the Northeast. I would never attempt to go Elk hunting with a 30/30 or 35 remington, why would I limit my range to 100 yards or so when 100-300 and even farther(for the impatient) is possible ?.