Was shooting today doing some final chrono testing (confirmation really) of a .40 load that is going to be produced. It is one I have been working on for literally over a year. I passed the 2K round mark in testing and am very happy with the results.
As an aside, while I was out, I put some of the hot .40 rounds through a Gen 5 G20.
They ran through the gun perfectly, just as easily as they ran through the Gen 3 G22.
In my experience .40 S&W has not generally been a particularly accurate cartridge, (excluding custom race guns).