Tommy: Personally, I agree with 1kstr - I always go thru a break in process with a new rifle. However, as with many other subjects, there are others who believe break in is a waste of time and money.
Secondly, there are a number of suggested ways to break in a rifle, either on this or other forums, besides than firing. One way I have read (from a knowledgeable shooter) is to run 100 patches of JB bore paste thru the barrel to lap the rifling.
Given the outside temp, I would try this, or some other indoor technique, as a minimum. Don't forget too you will have to sight in the rifle, so some number of shots will be fired before camp... clean the bore throoughly between each shot, as well as cleaning after each 5 shots (for 10 iterations), if possible, while hunting. And don't overheat the bore!!