Thanks for the replies folks. I was bascically trying to get information on how it woudl affect cycling, etc. I have entertained the though of building a super light Glock (fluted barrel, lightened slide, titanium parts, etc.). I know the Glock is pretty light anyway, but it got me to thinking that if a M26 works just as well as a M19, but has less slide weight why couldn't you mill away a spot hre and there to get the slide weight the same as a 26?. It looks like if you are going to monekey with the slide weight you would have to compensate with a different spring or varible weight spring to keep the gun from unlocking to soon (and know what you were doing). I sort of guessed it might allow faster cycle time, but like most of you, I can't get back on the trigger quick enough to probably ever take advantage of that. I know that Taurus does or will make a titanium slide version of their little 9mm, so I am guessing the recoil spring will be pretty darn stout. I have a friend who has a 40SW Hi-Power and the slide does seem to be a bit heavier, but the recoil spring is the real bugger. His 110-lb wife can't even cycle the slide to get it going.
Thanks Again