Ok, I got to the range yesterday but I made a rookie mistake and didn't label over half of my loads tested. I know, I know.... I suck. I also just shoot from 25 yards to check velocity and give me some ideal on loads.
Next, I'll label them with tape. But this is what I got so far:
350 gr XTP
28 grs of 800X
Avg. velocity of 1330 fps using slugsrus.com sabots
No signs of over pressure. I'll work up 30 gr loads for them. Looks promising: