Come on Cocadori? Under favorable conditions, with a capable rifle, a 3 shot 1/2 moa group @1000yds is not that difficult. Five rounds becomes more challenging. Ten round groups in BR competition is really, really challenging, testing the endurance of the shooter, rifle, and your luck with the wind.
I'm a long range hunter, so I train with bi-pod and rear bag, shooting 3 or 5 shot groups from 300-1200yds. Mostly 3 shot groups. Anything more for me is just toasting the barrel for no purpose.
