1966 mustang front spindle worn

the spindle is a little worn where the outer wheel bearing seats,does anyone know if i can peen the spindle with a center punch to tighten the bearing on the spindle,there is no bluing on the spindle so i do not think the bearing has spun,i notice this on general bearing replacement,i did not have any noise or bearing problem,i just wanted to replace them because the old ones had been in for a long time.if anyone has any suggestions please reply. thanks:scratchchin