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Taken from Layne Simpson's Handloading Column:
Velocity Tests: 6.8mm SPC Remington
Velocity averages taken from one 10 shot string clocked at 12 feet from the muzzle.
Remington Brass was used throughout testing.
Federal 210M primers used in all loads for the SSK Industries barrel.
OAL = Over All Length
FPS = Feet Per Second
* = Compressed powder charge
Reduce all powder charges 10% for starting loads.
SSK Industries G2 Contender Carbine w/ 23" barrel
Sierra 90gr. Varminter
VV N-135 - 29.5 Grains
OAL: 2.220"
Vel: 2,819 FPS
Sierra 110gr. ProHunter
VV N-135 - 28.0 Grains
OAL: 2.315"
Vel: 2,609 FPS
Hornady 110gr. V-Max
Benchmark - 30.0 Grains
OAL: 2.320"
Vel: 2,744 FPS
Sierra 115gr. MK
Varget - 30.0 Grains
OAL: 2.445"
Vel: 2,553 FPS
Hornady 130gr. SST
Benchmark - 27.5 Grains
OAL: 2.435"
Vel: 2,412 FPS
Hornady 130gr. SST
WW-748 - 30.0 Grains*
OAL: 2.435"
Vel: 2,407 FPS
Hornady 130gr. SST
AA-2230 - 27.5 Grains
OAL: 2.435"
Vel: 2,361 FPS
Velocity Tests: 6.8mm SPC Remington
Velocity averages taken from one 10 shot string clocked at 12 feet from the muzzle.
Remington Brass was used throughout testing.
Federal 210M primers used in all loads for the SSK Industries barrel.
OAL = Over All Length
FPS = Feet Per Second
* = Compressed powder charge
Reduce all powder charges 10% for starting loads.
SSK Industries G2 Contender Carbine w/ 23" barrel
Sierra 90gr. Varminter
VV N-135 - 29.5 Grains
OAL: 2.220"
Vel: 2,819 FPS
Sierra 110gr. ProHunter
VV N-135 - 28.0 Grains
OAL: 2.315"
Vel: 2,609 FPS
Hornady 110gr. V-Max
Benchmark - 30.0 Grains
OAL: 2.320"
Vel: 2,744 FPS
Sierra 115gr. MK
Varget - 30.0 Grains
OAL: 2.445"
Vel: 2,553 FPS
Hornady 130gr. SST
Benchmark - 27.5 Grains
OAL: 2.435"
Vel: 2,412 FPS
Hornady 130gr. SST
WW-748 - 30.0 Grains*
OAL: 2.435"
Vel: 2,407 FPS
Hornady 130gr. SST
AA-2230 - 27.5 Grains
OAL: 2.435"
Vel: 2,361 FPS