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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
 
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