sharkjuju Posted January 10, 2007 Share Posted January 10, 2007 I would normally think this is a stupid question but I ran into it. I had loaded some .40 S&W with AA #7 about 9 months ago using a set volume powder measure. I recently reloaded some more .40 S&W using the same powder measure and the remainder of the AA #7 I had used previously (had been resealed in the original container-stored at room temp indoors). The charge weight this time was about 0.5 grain lighter than the first time. I double, triple checked the weights and made sure I was using the same powder measure. I used the same scale as the 1st batch and I double checked on an electronic scale. Since I was loading about 7.5 grains to begin with, this weight difference is significant. Can the density of powder over time. My initial reaction is that it should be stable. I tried to run a search but did not find this topic in previous posts. Any comments? Quote Link to comment Share on other sites More sharing options...
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