Cor-Bon 260 Rem 139gr – Test Results

corbon139

Manufacturer: Cor-Bon

Date Fired: 22 Sep 2007
Time Test Began: 1015
Range: Deer Creek Shooting Complex
Wind: 3-5 MPH
Temperature: 55° F
Elevation: 3200′ ASL
Lot Number: 20070101

Factory Velocity: 2750 fps
Product Number: PM260REM139
Purchase Price: $22.60 USD
Bullet Used: Lapua 139gr BTHP Scenar
Ballistic Coefficient: .615

Sniper Central Custom Remington 700 Tactical Rifle (SC2) Test Results
Average Velocity Standard Deviation Extreme Spread Accuracy w/flyers Accuracy no flyers Best Group
2748 fps 13.43 39 .467″ .467″ .210″
  • Great load using the 139gr
  • Velocity is almost exact (2748 vs 2750) to the published velocity
  • Uses Remington brass
  • Very accurate load with very good velocities for this bullet in the shorter barrel

 

KMW Long Range Solutions Custom .260 Tactical Rifle
Average Velocity Standard Deviation Extreme Spread Accuracy w/flyers Accuracy no flyers Best Group
2837 fps 18.01 57 .459″ .459″ .217″
  • 4″ longer barrel gains 89 fps over the SC2
  • Very accurate out of this rifle with consistent groups
  • Faster than advertised velocity with this 26″ barrel
  • Velocity of over 2800 fps gives this load better ballistics at 1000 yards than the 300 Win Mag 190gr Match.

NOTE: “Accuracy with flyers” includes the raw averages including groups where the shooter called a bad shot before rechecking the placement of that shot. The “average without flyers” is the average group size with those “flyer” groups not added in.