Well, I went out to try to see how these grouped. Wind was 30 to 40 mph so no cronograph. I should have saved my time and components lol Even from the prone, the wind was bouncing me around and I was having a hard time keeping the crosshairs inside the 2" circle, let alone shoot a decent group. Ah well, I just HAD to try it. I ended up with just under a 4.5" spread. Ugh Now to wait for the wind to stop, or at least slow to reasonable levels.