LongJohn,
Since you have been out of the field for 30 years, and assuming you are using a scope, you should easily be able to kill deer out to 150 yards, which is fine.
If you have a really good scope, and a good hold, and steady arms, then you may be able to stretch the .30-30 to 200 yards, which would be its most practical limit, but I would stay away from that during your first year back in the field.
Regards,
Mannyrock