BTW, I have an original Schuler Jumbo but think that the 500s built by Benny Laubscher are the cat’s meow if an original Jeff isn’t in the cards.
Something about his big bolt guns is just right IMO.
As an aside, I did see a genuine W.J.Jeffery built on an Arisaka action not too long ago on Gunbroker.
Wasn’t a 500 but it was a revelation to me that Jeffery had built ANY rifles on that action!