Semi That's some dandy shooting especially for an old buck like you. But I have to agree with Sabot in sighting in 3" high at 100. Then you can hold dead on out to 150 easily.
But then again, if you're only hunting one area and know the yardages in your plot you can just use a hold over and put your tag on your deer.
As for the Leupold scope, I like them. My Accura V2 has a Leupold Ultimate Slam scope and has the BDC reticle. And it is spot on for my load. Too bad they dropped this scope from their product line.
I like the Omegas too and I just might get one someday. But every time I see one the used rack it is in rough shape. You know how it is. Some guys just don't know how to care for muzzys.