This is a two-fer. I loaded some 9mm a while back, and this batch had always fired very consistently in my G26, but last time out, I was experiencing a significant amount of stovepiping with the same batch, but these were cartridges I had reloaded about a year prior. These slugs were Alox coated, and I recall some discussion a while back that Alox can have have a negative effect on powder over time. Any truth to this, because it might explain the problem? Second, in light of the potential issue addressed above, I am thinking of trying powder coating for my slugs. Is there a good source for the step by step process? Does the powder coat create any sizing issues? I had planned on running any that I did through a sizining die before reloading. All advice appreciated.