Posting this for those who may have missed it. If you saw it already, sorry for the redundancy.
Many of us are long-time 10mm fans, especially us "oldsters" who, while we enjoy the Glock 10mms, have seen, shot and still own many others.
Assuming the YouTube vid below isn't someone's rather involved way of jerking the chains of long-suffering 10mm fans, it appears to be CZ's public outing of things to come.
The vid reveals an allegedly "experimental" CZ 10mm and shows it being fired, giving the viewer the inference that the gun is in the testing/vetting stage.
The pistol, to me, appears to use the frame of a CZ97B
specially mated to something like a .40S&W P-07 Duty
upper, and either CZ had a 10mm test barrel made for this prototype or they took a .40 barrel and reamed it out to 10mm specs (as others have done on .40 --> 10mm "conversions"). Same difference ultimately.
Using a .40-scaled slide would allow compatibility of the fit and specs of the breech-face (i.e., firing pin, ejector, extractor, etc.) with the back end of the 10mm case.
Magazines probably would be the easiest change-over, with CZ narrowing the feed lips of a 97B .45acp mag to .40/10mm-width. That wouldn't be that much of an engineering challenge, and the COAL of the .45acp and 10mm is nearly identical. They might've played with the follower a bit to ensure reliable feeding. Looks to be 15-rds sitting on that table at the start of the vid.
So are we seeing, essentially, a 15+1 10mm 97B? Do tell ...
I'm also assuming that CZ boosted the springs up to XP levels or only allowed the shooter to use .40-level 10mm ammo in this prototype.
Things are sure getting interesting ... Just FYI for the group.