CC,
Actually, Burris made a dialing version of the FFI 3-9x40 fairly early in the dialing era, with a heavy coil spring at a 45-degree angle to make sure it dialed correctly. I still have mine, and it still dials correctly after a lot of use--despite not weighing 20 ounces. But it apparently failed in the marketplace because so many shooters believed it simply couldn't work, because it didn't weigh 20 ounces.
In fact, it was apparently the same design as the C4+. I know this due to getting a 3-9x40 C4+ 2-3 years ago, which was exactly the same length/weight, etc. The only difference I could tell (aside from the windage-hashmark reticle) was the exposed turrets of the C4+ (which proved to adjust very repeatably (even without being C-clamped to a post), as I proved by shooting it a lot. But again, apparently too few people believed that could happen.
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