I haven't used the ammo but I have the empties and have been loading them with Unique and the Fiocchi primer and get very good life from the hulls. The first few loads in them tends to blow the mouth of the hull out straight so I manually align the crimp starter with the original folds and the crimps are perfect. After about the 4th reload the mouth will get some memory and the crimp starter will work on it's own. I figured I'd get to load these shells about 3 times before they split. I was surprised.