I have been shooting Cheddites for many, many years. At one time, about 3-4 years ago, I noticed sometimes the primer would be pierced by my Perazzi, and with my 870TC. It did not happen a lot, perhaps 2-3 times per hundred. Never a failure to fire mind you, just pierced primer. After they ran out, I switched to Fiocchi primers. Bought 15,000 of them. Had more failure to fires in the firs sleeve than I have ever had in 35 years shooting. Traded off the remainder of the Fiocchi's for Winchesters with a friend that loved Fiocchi's. Shot up all the Winchesters and bought more Cheddites at the Grand Pacific year before last. Loaded them all up, (10,000), and not one pierced primer. When those ran out, I found I had about 1000 of the old Cheddites I used to use and figured I would shoot them up. Started piercing primers almost right away. Same as before, about 2-3 per hundred. What all this tells me is that at some point Cheddite had a batch of primers with soft metal in the anvils. None of the newer Cheddites have exhibited any problems with piercing at all... All things considered, I'll continue to shoot the Cheddites... Just my experience... Dan Thome (Trap2)