139gr Scenars with 47.8grs H4831sc in my Lawton 260 with a 1:8.5 twist at 2890 fps. Load averages under 2" at 500yds and 4" at 800 for 5 shots. 140gr A-maxs shoot about the same. Tired H4350 and it did crazy things.
My H4831sc loads are condensed loads H4350 are not. That could be the difference.
With H4350 I got 2825 fps with no signs of pressure. The next day at the range I was checking drop data and had to almost beat the bolt up on several rounds. Crazy thing is that it was 30 degrees cooler.