I do not understand Big Bang Theories.
Originally, 1926, Lemaitre, there were short distances, small red shifts etc and this theory was understandable.

Now we are told physical laws were in force immediately after the BB. With ballistics the places of impact and of firing can be deduced from the orbit of the bullet. Applied to the actual astronomical objects the conclusion is these objects were fired at different moments.

Another problem is the velocity. When the velocity is deduced from the red shift far away objects have velocities approaching the speed of light. Since the BB.the center of gravity of the universe did not move. Far away stars have been decelerated during billions of years. When one calculates the past velocities of the now fartests objects, one finds velocities of several times the speed of light, which is impossible.

Does someone have an explanation for this ?

The BB theory was the result of the supposition the observed red shifts are the consequence of the velocities of the sources. But it is curious the largests red shifts are associated with the fartest sources.
Could red shifts be function of distance?
Could it be wise to drop this theory from 1926?