My MVA long-range vernier showed up Thursday and I shot it on Saturday. You folks were right, no problem zeroing at 100 yds. I can't recall just now how many minutes it was at for 100. I can say though, that when it was set at zero (my starting point) it shot about 8"-9" low at 25 yards! Yes, it was also necessary to remove the barrel-mounted rear sight.
Now that I have my sights working, I can get back to my load development. At 100yds had 3 flyers that were 6" out, the remaining 6 shots went into 3". The two factors I'm going to work on first are: 1) Verify my OAL and see if I have room to seat my bullet further out. 2) Get far more scientific on how I provide my grease cookie. To get started, I have just been rolling it in a ball about the size of a large pea and putting in on top of a waxed paper disc.