Yes - use the digital thermometer. The IR only measure surface temp and there can be drastic differences in the plastic temp from the bottom to the top of the cup. Especially if you have a full cup versus 4 oz's. I have shot it at 310 with no issues for some baits. I prefer to shoot at the lowest temp I can get away with but on first heat I always try to get it to 350 and let it cool a bit before shooting.