Using 'ram something home' implies repeating something to ensure the listener fully understands.

Repetition effect

It often suggests an attempt to convince someone by emphasizing a point strongly.

Persuasion strategy

The phrase can carry a connotation of being almost too forceful or insistent.

Highlights the physical effort put into inserting something firmly into place.

It's often used when precision or a perfect fit is necessary for the task.

The action is not just about force, but also about completing an insertion or assembly.