I have seen a large moose drop to a 100 grain .243 round, so 180 grains is a lot. Cup and core bullets have worked well on moose and deer for a hundred years or so, I don't know when exactly they stopped working.......
By the way, My friend and I dropped a pretty big bull this afternoon with a ...........you'll never guess............... .30-30 winchester . 1 shot to the back of the neck at 80 yards and drop dead Fred. We had given up on the idea of seeing a moose as we had gone about 90 miles up a friggin hard river with 3 portages dragging that Goddamned aluminum boat up and down them all day. Well, we were about 5 miles from the dock, and had all the rifles put away in the cases, but of course left old beat up faithful (marlin 30AS lever baby) out in the boat (just in case).
Well I'll be damned, he was just sitting asleep on the shore, and when he heard the boat come around the corner, he stood up and started walking towards the trees. My friend had only 1 shot at an animal facing away and going fast. He saved the day and the trip. I think that nothing has changed in a game animals anatomy in centuries. You will do JUST FINE with the power points. (the bullet in the .30-30 was a flat point 150 grainer, and the moose is easily over 1000 lbs on the hoof. ) I will try to get some pics tomorrow and post. We just hung him in the shed for now.
Can't wait to try out the new jerky recipe......... Yahoo!!!!!!!!