Like the 45acp ? 40's not going anywhere anytime soon. It'll be a long time before law enforcement is all done with and when that happens there will be a **** load of 40 police trade-ins being sold to the public who will be buying the F outta 40 ammoCaliber argument aside, one thing that the wave of transition from 40 to 9 in the le community will do is drastically reduce the demand for 40 cal in the supply pipeline. Eventually the supply will dwindle to match demand, and the price of 40 cal will rise. I believe this whole thing is going to be very similar to the 41 magnum history in the long run. You can still buy 41 magnum, but it cost more per round that 357magnum or 44 magnum. So keep you 40, but expect to eventually pay even more per round than you do now. As always, YMMV