Dave,

I'm new to 777, but that just seems too slow. At 1150 fps, there is only 1351 ft-lbs at the muzzle. Blackpowder will do better than that I know. With 70 grains 3f Goex, I get 1490 ft-lbs using a 385 GP in the 26" sidekick barrel. On the lower end in the GPH, I think I would expect 1750 ft-lbs (perhaps 1310 fps) with70 grains3f 777.