Took the new SBR out to the range for the first time. Tried Hornady 110 gn V-Max and 208 gn A-Max to see how it work with both super and sub-sonic ammo. Worked great with the super sonic rounds. Sub-sonic rounds would not cycle the bolt properly. The bolt feels really tight, so maybe that is it. Will a suppressor give it more back pressure to work the bolt? Is this normal?
I also checked the muzzle velocities against what Hornady put on the box. Hornady: V-Max = 2,350 FPS, A-Max = 1,020 FPS. Mine: V-Max = 2,303 FPS, A-Max 1,007 FPS. Pretty close for a 10.5" barrel.
Here are the targets. 50 yards with a Tru-Glo Red Dot sight. V-Max on the left and A-Max on the right. Interesting how the heavier bullets punched smaller holes in the target. The out liers on the V-Max target are from sighting in the red dot.