removing steering column

Use a roll pin punch on the roll pin. That punch has a ball shaped tip with a shoulder. They come in different sizes based on the size of the pin and the ball tip helps to keep it centered on the pin. A roll pin is super hard ( they can even break ) and should not mushroom easily.
For the solid pin I would place the tip of the pin between vise jaws so they support the shaft but the pin can be driven out. Smack it hard until flush then finish driving it out with a straight punch.
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