I built it on a savage action. Im getting a consistent 2115 fps with 649gr M8 API projectiles out of a 25" barrel, and sub MOA accuracy. Parent case is less than $1 each.
ballistics calculations
Indices Range
Range - yds. 0 100 200 300 400 500 600 700 800 900 1000
Velocity - ft./sec. 2115 1985 1860 1739 1624 1518 1418 1327 1246 1175 1116
Energy - ft.-lbs. 6425 5658 4966 4344 3789 3308 2889 2528 2229 1983 1788
Path - in. -1.5 0.0 -7.3 -24.7 -53.6 -95.8 -153.0 -227.5 -321.8 -438.5 -580.4
Time of flight - sec. 0.0 0.1 0.3 0.5 0.6 0.8 1.0 1.3 1.5 1.7 2.0