Since the ham is labeled "fully cooked," the goal is to simply re-heat it throughout. When calculating total bake time, estimate 15-20 minutes per pound for half ham that’s 5-8 lbs. Estimate 10-15 minutes per pound for whole ham that’s 10-14 lbs. Most importantly, internal temperature should be at 140° closest to the bone or in the center. **Note: If your ham is labeled “cook before eating,” cook ham at 350° until internal temperature reaches 160°.