I have a Remington 7400 in 308, I'm getting it to group 0.82" at 100 yards with hand loads. (which I'm told is amazing for a 7400). I tried it at 400 yards but didn't group it. i was shooting a 12" steel gong that had already been plastered with bullets. I'm confident to shoot a deer out to 300 yards. but how will the .308 do for elk and moose? I know it will kill them but at how far?