I would be cautious in using this information to draw any conclusions. As a competition shooter that fires around 15,000 rounds a year there are many factors here. Much more information is needed to place blame on what caused these failures. Considering this is something that is not commonly heard of with hornady to say the least, and the likelihood of having so many failures from only a couple boxes, I would suspect a gun issue but again cannot conclude without more data
I think something was wrong with the batch of ammo those boxes came from (the gun has never had this issue before or since on any types of ammo over 1000's of rounds)I just still cant get that out of my head when buying Hornady products. Also havent heard of this issue from other folks either so it was indeed strange.