"...that will let you set your scope (turn the elavation knob to that yardage) and let you hit a target at that given yardage? ..."
If you just take the word yardage out of the turn the elavation knob to that yardage
and replace it with "elevation" you can use nearly any quality scope with tactical or target turrets.
What you're doing when you turn the dial to a "yardage" is adjusting the "elevation" in the scope. If you know the elevation required for a given distance jsut turn the scope to the setting... it really makes no difference what the numbers display... yardage or elevation once you have a good handle on what you're doing.
BTW. I believe the "BDC" turrets Mr Burns uses are custom made with "yardage" marks and just replace the standard "Minutes (MOA)" marks the scope(s) come with when new.
Kenton Industries makes the knobs I believe.
Here's what is boils down to:
A Rose is a rose is a rose..