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Warning: Bullet selections are specific, and loads are not valid with substitutions of different bullets of the same weight. Variations in bullet length will alter net case capacity,  pressure and velocity. Primer selection is specific and primer types are not interchangeable. These are maximum loads in my firearms and may easily be excessive in others. All loads should be reduced by 5%,  and developed following safe handloading practices as represented in established reloading manuals produced by component manufacturers. Presentation of these loads does not constitute a solicitation for their use, nor a recommendation.
 

Cartridge: 6.8 Remington SPC

  Firearm: Ruger SR-556/6.8   Max COL: 2.260″
  Bullet Diameter: 0.277″   Primer: CCI 200
  Barrel: 16.12″   Reloading Dies: Lee Precision
  Max case length: 1.687   Group: Distance 100 yards – Three shots
 

COL and Capacity   Load Data & Performance
Bullet Type Bullet
Weight
C.O.L.
Inches
Case
Grains
Water
  Powder Charge
Grains
Muzzle
Velocity
FPS
Muzzle
Energy Ft/Lbs
Group
Inches
Sierra Varminter 90 2.260 29.7   Re7 27.0 2764 1527 0.9
Sierra Varminter 90 2.260 29.7   Lil’ Gun 24.0 2810 1578 0.9
Sierra Varminter 90 2.260 29.7   IMR 4227 24.5 2766 1528 0.6
Sierra Varminter 90 2.260 29.7   RS X-Term 30.0c 2774 1537 1.1
GS Custom HV 110 2.260 25.5   2400 18.0 2403 1410 1.2
GS Custom HV 110 2.260 25.5   Re7 23.0 2444 1459 1.0
GS Custom HV 110 2.260 25.5   IMR 4227 21.5 2461 1479 1.1
Hornady 110 2.260 27.3   Re7 24.5 2497 1523 0.9
Hornady 110 2.260 27.3   IMR 4227 22.2 2482 1505 0.6
Hornady 110 2.260 27.3   RS X-Term 27.0 2521 1552 1.1
Hornady 130 2.260 25.8   Re7 23.0 2313 1545 0.8
Hornady 130 2.260 25.8   IMR 4198 22.0 2276 1496 1.1
Hornady 130 2.260 25.8   RS X-Term 26.0 2393 1653 1.0
Speer SP 130 2.260 26.7   Re7 23.5 2370 1622 0.9
Speer SP 130 2.260 26.7   IMR 4198 22.5 2293 1518 0.8
Speer SP 130 2.260 26.7   RS X-Term 26.5 2403 1667 0.8