Here is info I got from a phone call to Sierra.
90 gr. 6mm Game Changer: Length 1.16" Boat tail length .”, Bearing surface .214"
.490 G1 BC @ > 2,700 fps
.400 G1 BC @ < 2,700 fps
.320 G1 BC @ < 1,380 fps
130 gr. 6.5 Game Changer: Length 1.37" Boat tail length 0.15" Bearing length .436"
.510 G1 BC @ > 2,350 fps
.490 G1 BC @ < 2,350 fps
.385 G1 BC @ < 1,580 fps
Duane
90 gr. 6mm Game Changer: Length 1.16" Boat tail length .”, Bearing surface .214"
.490 G1 BC @ > 2,700 fps
.400 G1 BC @ < 2,700 fps
.320 G1 BC @ < 1,380 fps
130 gr. 6.5 Game Changer: Length 1.37" Boat tail length 0.15" Bearing length .436"
.510 G1 BC @ > 2,350 fps
.490 G1 BC @ < 2,350 fps
.385 G1 BC @ < 1,580 fps
Duane