What does gone mean, not found at big box stores or do you need a 12th degree level of Google fu to find
9x25 dillon certainly doesn't fill the shelves at academy but can still be had online with ease
If you stretch it to 30 years you have the "bren ten" 10x25, which was replaced by the .40 S&W (shorter and weaker) its not common but you can find it at big box stores
A lot of people say the .357 sig will be vacationing with the dodo, I hope not, think this may be the most recent ammo developed that has seen some success but is not mainstream.
The 5.7 was designed by FN to try to replace the 9mm for NATO, was supposed to work in a pistol and sub machine gun. NATO didn't adopt it.
Last edited by RamItOne; January 30, 2013 at 04:44 PM.