Several months ago after just finishing loading 2k 40S&W rounds I came to realize that between 1 and 150 of them had no powder. The last batch of that 2k was the 150 rounds and there was powder in the Lee powder measure on the Classic Turret press when I started that batch but it was empty after I finished. Didn't notice until I had mixed up the entire 2k in a bucket.
I plan to pull the FMJ bullets but haven't yet. Montana Gold TC, don't really know if the collet puller will hold them well enough.
So the question- what can I get to warn me of low powder in the hopper?