I had a near miss last week, first one ever in 30 years of reloading. I was at the range shooting my .45acp and about 20 minutes into it I opened a new box of ammo that I had reloaded. About the 4th shot in the shell fired but with such a low recoil it didn't work the slide. I dropped the mag. and raked the slide and the empty came out. With the slide held back I looked down the barrel and no obstruction was seen. I thought what the heck was that? I loaded the mag back in and the next shot was also the same result. Well that did it, I put the .45 away and headed home. I couldn't for the life of me figure out what had happened. I broke down the remaining 200 rounds or so that I did in that batch and about 20% had little or no powder in them. I am running a Lee 1000 and have been for years and this is the first time anything like this happened. I took the powder measure apart and everything was ok. So the next day I loaded up the hopper with 231 and proceeded to load. When the case came around to be crimped I was so paranoid that I looked into each case to make sure the powder was the correct height. Well about the 20th round a case was missing the powder. I cleaned all the stations out and took the powder hopper off and dumped it into a empty can. I worked the hopper several times and everything was ok. As I was putting the powder back into the hopper something caught my eye and I dumped the powder back out into the can again. I slowly poured the powder back into the hopper and sure enough a used primer was in there. How the heck it got into the can of 231 I will never know. So the primer would partially block the powder flow on and off. Well now I am paranoid and I don't trust the machine anymore because I can not physically see the powder level unless I stop and get up and careen my head around to see every round. So hence my question, does somebody make a low powder die that you set up to alarm when there is to much powder or not enough? I know this reloader only has 3 positions so either I would need to upgrade to the Load Master or switch to something else. Any suggestions?