ODIN Works Match Grade 16" 6.5 Grendel ULTRAlite Intermediate Barrel 1:8 twist
I just looked back at reloading notes...need to amend my statement. I'm remembering now, actually had promising groups with the 109AH but speed wasn't where I wanted it. So "couldn't get it to shoot" wasn't the right statement. I did 5 ladders, I'll post the max charge I shot on each powder. Some of these were compressed loads, but I didn't see any pressure signs.
Benchmark - 30.0 Gr: 2661 fps (ladder produced huge 5" group)
H322 - 29.6 Gr: 2628 fps (ladder produced 1.5" group)
IMR 4198 - 25.8 Gr: 2645 fps (ladder produced 1.5" group)
H4895 - 29.0 Gr: 2522 fps (ladder produced 3" group)
Power Pro Varmint - 31.6 Gr: 2598 fps (ladder produced 2" group)
I tried the 99 HH and saw 2800-2900 fps right off the bat. Settled on 27.6 Gr of H4198 which is shooting lights out.
If I could get the 97 AH to break 3000 fps in my 16" barrel, that'd be exciting.