Ok I'll chrono and give 4831 a whirl!!!!!!H4831sc has been my go to. My rifle likes the lite loads and 150 VLDs approx .015 off the lands (still feeds in mag). 2910 out of my 26 inch Douglas tube with 57 grns. I have loaded to 60 grns at over 3100 fps however groups come apart. I love this powder, very consistent.