Yesterday I shot 2ea, "one hole", 5 shot groups from sandbags out of my 629 Classic DX 5" that has a Leupold 4x scope. Both measured .82" C to C at 25 yards.
Boolits used were 429421HP and 429244MHP(scalped to eliminate gas check shank). Load was 8.6g of Green Dot. There was absolutely no leading, and the
"stats" from the chrono were equally impressive.
429421HP, weight 232g, hardness Bhn 11, ES 27 vel 1075fps SD 12
429244MHP, weight 225g, hardness Bhn 9, ES 18 vel 1034fps SD 6
The 429244MHP,8.6g load also shot well from my 329PD. Group size was 2.10", which ain't bad with the Hi-Viz type sight, and stats were ES 37 vel 990fps SD 15.
Once again, I've found Green Dot to be a great powder for medium (1000fps) loads in the .44 mag.