Has anyone had problems with bullets lubed with SPG and stored in tupperware containers causing corrosion on the lead and also the copper gas checks? I have not noticed this problem before but recently went to do some BP reloading and opened up the container I had sealed about a year ago and all the 45 cal bullets I had lubed with SPG were corroded and even the gas checks were green with corrosion. There was also a foul smell coming from the container like something was rancid or had spoiled. It even caused pitting in the lead bullets. Same day cast as the ones in the lubed container (and same type 45 cal bullets) I had stored in another container that had not been lubed were as shiny as the day they were cast. I like using SPG and it is a good product but I was surprised at what I found. Has anyone else had this problem and know what ingredient in SPG caused the corrosion? Thanks