Semi-auto function question

[Rimjim]

Been watching some animations on Youtube showing how a semi-automatic weapon (1911/Glock) operates. Seems that the bullet is long gone before the slide starts to react to the gun being fired. Is this correct and is there any way to prove that the slide doesn't move till the bullet has cleared the muzzle? Also, how much energy/gas pressure is lost activating the slide compared to a bolt-action type weapon? Just wanted to know if there is any conclusive findings on the subject.

Thanks

[Rimjim]

Just answered one of my own questions. http://www.youtube.com/watch?v=g5aWFcxE30E The high-speed photography of a bullet being fired from a Beretta 92 in this video shows the bullet clearing the muzzle before the slide starts to react. I was concerned about how much the play between the muzzle end of the barrel and the slide would affect the accuracy of the weapon. If it's a precision fit (not a lot of slop) when the gun is static, then the accuracy should not be too affected much as it's still in the static position after the bullet leaves the barrel. Slide doesn't begin it's rearward move until the bullet is clear.

[kcstott]

The real thing to consider is that John Browning had no way to measure if the bullet exited the barrel before the slide moved. The technology didn't exist.
But the 1911 is the standard by which all others are measured. And everything is compared to the .45acp so that speaks volumes for its timeless design