I fired those.223's with TrailBoss this morning. I could not make it out to the rifle range due to time constraints, so it was only 25 yards at my local indoor. They were very pleasant to shoot, low smoke, very low recoil and report. Just the plinker I was looking for. Groups were less than 3/4 inch, and I believe they could be much better. My rifle butt was unsupported due to the narrow bench that was meant for pistol shooting.