@DJ Fergus the barrel is slightly warm after the first shot, barely enough to tell. I didn't think it was a barrel temp issue because I use to be able to shoot it 5 shots total within about 2 minutes and they all had the same POI. I have shot it over the LabRadar, kinda got erratic velocitys with handloads and factory ammo, and it seemed like the LabRadar had issues with accurately reading the small 17 cal bullets. I'll try shooting it over the chronograph again.