Hodgdons originaly said it was the same as BP. Tests by shooters in the states showed higher muzzle velocities, Hodgdens changed their recomendations and now say you should reduce charge by 15% to get the same output as BP.
You can get 777 in ffg as well, though perhaps not in the UK yet.
“If a cricketer, for instance, suddenly decided to go into a school and batter a lot of people to death with a cricket bat, which he could do very easily, I mean, are you going to ban cricket bats?” :- Prince Philip said after Dunblane