The last 2 times I’ve been out shooting my Lab Radar either refuses to work (20-30*F) or today, gave me wild swings in readings (200+ FPS from my 41 Mag). Recoil felt the same. All charges weighted individually on Hornady auto charger. Both times with fresh batteries tried to see if any difference. In between the refused to work trip and this one, I used it at 45*F and worked just fine for my 280 AI load development. Was gonna see what everyone else has experienced.