Hey dudes...I don't know if there was a Rail animation out there so I went ahead and made one of my own....
The animation is pretty accurate except for the typical stuff, such as the size of ports and how quickly air is able to escape when vented. It's not realistic but does show how things work.
Now...there is a small hint of the "boost forward" or wharever they call it, you can barely see it in the end of the forward movement. The slower version makes it easier to see.
It's notable to mention that the bolt also boosts backward too, it's able to move open faster once that boost pressure vents out.
Questions? Comments? pie?
edit, you can find an assortment of other anims here
if you haven't seen it already.