Shot my new SPR at on the dry lake beds north of Dugway Proving Grounds Utah. Elevation 4070, 90 degrees F, baro 29.95, tail wind 10-12 constant, Blackhills Mk262 blue label. Was getting good groups on 20 inch target at 900 yards. This ammo was punching through 5/8 inch chip board and was still smoking. The misses were hitting clay and leaving nasty cavitations about 4-5 inches wide and 6-8inches long. I am confident this round is lethal at this given range. I am going to take it out to 1000 tomorrow and see if it still flies without tumbling. I will try to go to 1100 but I am certain the Nightforce will run out of elevation. I will crank it to the max and hold as much mildot to see what happens. Life is good.