The most collectible of the S&W ammo is in the boxes marked Smith & Wesson- Fiocchi...head stamped S&W-F. They were only in business together for months. I sold lots of Their ammo...shot a lot too. Their shotshell ammo was ,ostly Fiocchi and was good ammo...but thec ases sucked for reloading. They sold at the time probably one of the best waterfowl loads made.Killed on both ends. It was a 2 3/4 inch load marked 4 1/4 1 1/2 ox ...but actually weighed a bit more...near an avg 1 5/8 oz and it had copper and sometimes nickle plated shot. I shot some of the metallic ammo and never had any problems...but didn't shoot any 9mm.... If I remember right all the centerfire metallic was nickel plated. I still have both full and partial boxes of some calibers...even a box of 22s...but at that time I shot Win and Rem 22s