9mm Federal- expensive ammo for a 9mm revolver
9mm Winchester Magnum- same
ANY WSSM cartridge- lots of hype, then they pulled the rifles from the market.
The 9mm Federal was doomed when they discovered that it would fit and fire in old 38 S&W revolvers, despite being loaded to dangerously higher pressures. That and the fact that virtually the same revolver was already available in 357.
I've always believed that the 9mm Magnum would have been a hit if it had been chambered in a factory M1 Carbine. The stuff that dreams are made of.
The WSSM cartridges had a lot of potential. I was sorely tempted by the thought of a short, light deer rifle in 25 WSSM. The cartridges were introduced in 2004, but were doomed by Winchester USRAC going out of business in January 2006.