I don't think that is so much the case here. You can research average groups at benchrest competitions for a light mod sporter group and make some reasonable deductions from there. In a flat environment with all the time in the world with known wind values 10" is an average group to place top 3. Add an inch for lack of known wind, 1" for no bench, 2" for up or downhill angles, 2" for rushed shots...... 20% of your group outside the kill zone are some pretty crap odds.
it's pretty obvious these guys are not in the heavy gun class as they aren't lugging 70 lbs of aluminum billet firearm up the hills.
The above coupled with the studies done saying that even the softest bullets will fail to properly expand after 800 yards with the RUM paints a clear picture to me.
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