From a couple of other threads on here...
I've had mine built for about a year. It's taken that long to get some load testing (lack of chronograph until recently).
I've gotten the following through my 18" barrel:
70gr Sierra BK ~2935fps with 27gr R10X
75gr Hornady VMax (Bulk packs through Midway) ~2993fps with 27gr R10X and ~2907fps with 24gr IMR4198
85gr Nosler BT ~2728fps with 22gr R7 and the same with 23.2gr IMR4198
87gr Speer Hot-Cor ~2864fps with 27gr R10X and ~2814fps with 24gr IMR4198
No experience with the hollow points yet, but I will. The 75gr VMax is awesome. I'm at 27.2gr of 10x and have them over 3000fps. Same with the 70gr Sierra BK.