In the first 2 videos I wasn't paying too much attention but it seems that the recoil of the larger rounds helps with the slide cycling fully, where the G17 is 9mm and does not have as much recoil(energy to push the slide as hard)
The Glock does not have anyting to do with recoil. It is the cartridge igniting that does and given the same ammo and same length of barrel the recoil enregy produced will be the same for all. The Glock's problem is the slide is heavy and requires more resistance to the rearward movement to operate sucessfully. Each design have their pluses and minuses. You trade off one feature to gain another. Glocks are great pistols for what they are designed for and if they meet your needs then they are the guns to buy. If they don't then move on to another design. There are lots out there and in today's gun market there is something for everybody.
Take Care
Bob





















































