If it is all you have, and what you can afford, use it. If you have something bigger that you shoot well, use that.

The one thing you have to remember about moose is that they like wet areas. You do NOT want to deal with a moose in the water, especially if you are in the Yukon or Alaska where it is really really cold water. If you need to break one down in a hurry to keep it from getting in the river, a .270 is not your first choice.

The other thing you have to remember is that a lung shot moose is going to take two to three minutesor longer to bleed out. A smaller hole means less blood loss, and more time for the moose to move away from you. You will have six loads of about 100 pounds to get the meat back to camp. Every step he takes is an extra work for you. So one extra moose step = 2 human steps X 6 meat loads = 12 extra steps for you to pack 100 lbs.