HuntingKS, don't give a lot of thought to any velocity differences between different sabots. It won't make that much of a difference.

That load is going to give you something like 1700 fps or more with any sabot. With a 125 yard zero you will be no more than three inches high or low at any point between the muzzle and a 150 yard target. If you don't need to shoot that far, and sight in with a 100 yard zero, you'll be about an inch high at 75 yards and about two inches low at 125.