Started with a mated pair Spike Tactical upper and lower add to a Sanders Armory match barrel 20" 1 in 8 twist ,R5 rifling, a low Pro adjustable gas block. The 19in rail from just rails. A 2 stage trigger from Tommy Tactical with a Brownells 6.5 Grendel bolt carrier group Spike Tactical, Parts Plus lower parts kit, unbranded 6- port comp, A1 stock Harris bipod 6-9" 20 Moa cantilever mount, topped it off with a Athlon Argos BTR 6 - 24x50 scope.
Looking at strelok Pro my 140 grain rdf at 2300 fps stays Super Sonic Supersonic 1000-yard