Moussaka, did you check to see if the wrong-natured pokemon might actually be in the frames for that seed? If the NPC south of the daycare moved even once, you could miss your egg by one or two frames.
There are two different RNGs. Egg natures/shininess are on a different RNG from egg IVs, and are completely unrelated to NPC movements.
Actually I have seen that Nidoran-M has egg moves and for the longest I wondered how. The only way is that if Nidoqueen hatches both Nidorans. That's the only way I can see him having something like counter and head smash.
Nidorina and Nidoqueen can't breed. To get egg moves, you need to use Nidoran F, which does breed both genders. As for which gender ratio to use, though, I have no idea.
anyone?
-Download the newest RNG Reporter if you don't have it already, and open it
-Open Seed Finder
-Click on the Find Seed by IVs tab
-Make sure the Open option is selected
-Enter the nature and IVs you want in the white boxes
-Click Find