[BBell]

For every obsolete cartridge there are 10 new ones it seems.

[Eric in the Ozarks]

I remember when the .40 S&W was introduced and was surprised when it took off.

[niteowl77]

For every obsolete cartridge there are 10 new ones it seems.

And of those ten, nine will themselves become obsolete... the lone survivor duplicating the ballistics of something designed shortly before or after WWI and forgotten for almost a century.