New Guy.
before you start changing sights - little info. You never said what your sight picture is.... Using the sights you have, the front bead should be at the very bottom of the rear sight "V" notch - not even with the top of the "V" ears. If you using the top of the "V" technique that would easily account for 8" high at 50 yard line. If this is the case then the fix is easy - use the rear sight correctly.
I hope this helps.
Good luck, medved404
