It's very possible to shoot a MOA-size group at 1000 yds, but with a 10X scope, what you are aiming at needs to be a little larger than 10-1/2".
As Jose said, your crosshairs would cover most, if not all of that. Try putting a 1" black dot on white paper at 100yds and see for yourself.
Why would I shoot at 1" dots when I can shoot at 1/4" dots. Theres no point if you can't hit what you are aiming at. A little funny looking over the target thread with so many tiny groups 2' away from the bull. If you think 10x is not enough I guess you have used 10x at that range. Great for you. Just because you reticle covers a moa target at 1000 yards does not mean they all do.