I've often read that the correct place for the ocular is over the tang bolt. I set my scopes as far forward as possible for me to use and I find that many of them hit about there.

1st Special Operations Wing 1975-1983
919th Special Operations Wing 1983-1985 1993-1994

"Manus haec inimica tyrannis / Ense petit placidam sub libertate quietem" ~Algernon Sidney~