I'm running a 240 SMK using 65.5 H4831SC , Fed215 primer with Hornady brass seated at 2.500 . That's aprox. 10thousanths off the rifling . I'm chronographing an avg of 2,606 FPS . It does well at a 1000 and is DEVASTATING at 600yds . It holds just under an inch at 200 and I havent realy tested the grouping , I just took and shot them at the various distances and got good results . Want to push it faster . Any ideas .
