Home Forums Hunting & Shooting Ask The Gunwriters Vihtavuori powder corroding brass cases

I have to say that for you to absolutely know what happened to your cartridges, they would have to be examined.

I maintain that the powder wasn't to blame, or all of your cartridges would have corroded. I believe that a foreign substance caused the problem. The corrosion is more pronounced on the outside. My question: Were the cartridges in your initial picture completely corroded through? I am referring to the picture that you took of the outside of the cases.

I have N140, N150, N160, N540 and N550 here. All were made before 2016 and none has shown any deterioration either in their original containers, or as loaded ammunition.