I found sealed beam headlamps to be worse than useless; I always replaced them with either Cibie or Hella E-Code headlamps. The Cibie
5 3/4" H1 high beams I fitted to my 1973 Bavaria had an 8,600 foot reflective range. They were worth every penny.
And they became only slightly less pitiful even after they started making halogen versions with a capsule enclosed inside the fixture.
But then the DOT has always been, and still lives in the stone age when it comes to lighting regulations.