fine ape wrote:40 isn't dead, dying yes...
From a new firearms and ammo sale standpoint if it is not dead it is as close to it as possible without being in the ground. The LE departments that still have it will in most cases dump it on their next scheduled sidearm refresh, USPSA still uses it for limited but I've heard rumors of them considering lowering the caliber to 9mm given the migration to 9 in open(the issue will be the uproar from all the existing 40 owners - much like 9mm from 45 change in the revolver class), that leaves the average own that previously bought one and the few new buyers getting bad advice that a 40 is so much better than a 9. Will 40 be totally gone, no - not for a long time, but there are tons of dead calibers out there that just don't have a reason to be around and the 40 falls in that group.
The 40 had its time, but based on the advancements made in bullet technology the resulting stopping ability of a 9, 40 45 are so close it really negates the 40's place in the market. If you move from protection to range use the 40 falls short again, it does nothing better than either 9 or 45.
I have over 10K of once fired nickel casing and own 2 40's. One a 2011 limited gun and a Glock 27. I'll hang on the limited gun, it is not worth selling and I still have 4K of loaded ammo for it, even though I don't shoot USPSA these days. The Glock is night stand gun, I'd never buy it now, but at the time it was the tool for the job. If I could trade it even up for a 26 I'd do it in a heartbeat.
I'm all for odd calibers, heck I have a 38 special wadcutter only auto, but even that is more practical for its intended use than a 40.