Good luck finding suitable factory ammo for 1,000 target shooting. The only '06 match ammo that I am aware of is the Federal Gold Medal Match ammo with a 168gr SMK bullet. As I previously stated, this bullet is totally unsuitable for long range (beyond 600 yards) shooting.
That will not be enough. With my 190SMK load at 2900fps, I required 30.5 MOA more of elevation from my 100 yard zero. With 65 MOA of total adjustment, that only gives you 32.5 MOA of adjustment IF YOU ARE LUCKY AND ARE IN THE MIDDLE AT 100 YARDS. Almost to a man, everybody shooting in 1,000 yard competition uses a base with built in slope so that less scope adjustment is necessary to reach 1k. So, to summarize: the .30-06 for 1,000 yard shooting is a reloading proposition, and a scope base with a 20 MOA slope is required. Hope that helps.
Don