Welcome to the Nation u2. Sounds like your Sporter stocked Vanguard in 30-06, the Leupold scope and you have been a great trio over the years. The -06 has been a go to caliber for many years and one that will handle just about anything.(with the exception of the big bears) Given your hunting situation, your success rate year in and year out, and given the trio's longevity, I'd say one thing, If it ain't broke don't fix it. Do you do any other type of hunting, say varmint, or big game, or is deer hunting your main interest. Do you own any other Weatherby's, or is it just you've never been bit by the Weatherby bug. 🐞
Again, welcome to the campsite!