I do own a chronograph and I have compared equal volume of Black Mag'3 with Tripple Seven ffg. (not completely fair as fffg 777 would compare better but I can not find it anywhere around here). In longer barrel rifles like my Omega Black Mag'3 gives me higher velocity and less felt recoil. The powder tends to build pressure slowly compared with the hard sock you get with Tripple Seven. The test I did was with 300gr. bullets in Harvester sabots. I think in short barrels 777 would likely outperform Black Mag'3 on an equal volume basis. I have not found any powder that will perform as well as Black Mag'3 with the same or similar lack of residue after the shot. I am working on getting an address for orders. As good as the powder is for me I really want them to survive. Distribution is the key.