arent most 40's a 9mm barrel profile? kinda like bull barrel versus whispy barrels.....yeah you can get whispy barrels that are accurate but on average more bull barrels are gonna be accurate....which would also explain the smaller guns being more accurate, the shorter barrel would be stiffer al else equal and why the 1911 guns tended to be more accurate(45ACP profile im guessing)
No, .40 S&W Glock barrels are larger diameter than 9mm barrels, cant fit a .40 barrel in a 9mm slide.
The 10mm barrel is the same diameter as the .45, so they're thicker and stiffer, but less accurate in my experience.
