Remember this, the 1" and/or 3/4" groups are the EXCEPTION rather than the rule with this rifle.
I've seen, sold and shot dozens and never I've seen one shoot that well. I'm not saying it can't be done, just saying you should count yourself among the lucky if your rifle will do it.
With that said, the rifle does NOT need to shoot that tight of groups to be an effective elk rifle, to ranges well beyond 300 yards! It will work to perfection in the dense stuff you described and more.
All of them I've shot functioned perfectly when a bit of cleaning care is employed.
PS: I'd put a lower powered variable scope on it too, like juster_86 said. Then shoot the hell out of the elk with it.
Zeke