I must disagree with this comment
In the last 3 or 4 years we have seen major manufacturers of firearms introduce more than a dozen pistols chambered for the 10MM Auto cartridge
Major ammunition companies have added just as many offerings. From the watered down stuff to full power.
Federal added full power 10MM Auto 180 JsPs about 3 years ago.
SIG is shipping both FMJ and JHPs loaded to full power as well as a line of P220s to handle them.
Barnes has added their solid copper 155 HPs, though at a wattered down loading. This ammunition has been tested in everything from a 3" Smitha nd Wesson CS10 to the 8.3" MP5/10 SMG and even the 14" barreled T/C
Hornady has continued to develop the 10MM Auto as part of their Custom offerings. While not at the cutting edge of full power they offer much more than some of the 40S&W lever ammunition on the market
Mike McNett at DoubleTapp has always been a HUGE supporter in the area of 10MM Auto ammunition development. For blasting to personal defense to hunting ammunition
Myself, I have been working on 240 grain JSP ammunition for the aging FBI MP5/10s and the direct impingement, integrally suppressed carbine that is looking to replace it.
The 41 Magnum has never enjoyed such a growth period in either firearms or ammunition.
About the only folks not on the 10MM Auto bandwagon these days is Smith and Wesson