If you over twist a bullet, it is apt to shed it's jacket quicker.
Tune windows for light bullets for the super fast twist and caliber can be finicky, to say the least.
Twisting fast as you can per caliber for any and all bullets is like saying that riots cure the chrono virus. Of course, 3/4" is accurate to some guys where it is time to re barrel for others.
When talking about modern bullets, shedding jackets is really only a problem with the most fragile varmint bullets like the Horn SPSX. Bullet uniformity has become very, very good in the last decade or so, and over-twisting bullets is really not much of an issue anymore, except for when the absolute precision is required like in BR competition.
Twisting as fast as is necessary for the very longest bullets you intend to shoot is a good way to go for most situations except short-range BR types of applications.
