He had no activist tendencies, no significant core beliefs, and did nothing in decades that would have ever made anyone remember his name. Typical easily-forgotten real estate Republican that gets re-elected by the segment of population that always votes for 'Incumbent'. Imagine getting served toast with non-dairy margarine and decaf coffee for every single meal over thirty years and you'll have some idea what life would be like if you were Congressman Gallegly.
Lifetime 'C-' rating from the NRA.
I wouldn't call Simi Valley remote. It is a fairly conservative area, and I think Gallegly kept getting reelected because of his strong stand on the illegal immigration issue. But you're right, he is pretty moderate.