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265110HV072 Technical Profile    Application: General Hunting

Barrel Bore Diameter: 0.256" 6.500 mm The diameter of the barrel from land to land.
Barrel Groove Diameter: 0.265" 6.740 mm The diameter of the barrel from groove to groove.
Bullet Weight: 110gr 7.1g Bullets are guaranteed to weigh within 0.25% of the stated weight.
Bullet Length: 1.29" 32.850 mm
Secant Ogive Length: 0.63" 16.081 mm These dimensions are critical to consistent external ballistic performance and are held constant to within 0.005 mm (0.0002")
Meplat Diameter: 0.06" 1.650 mm
Min Bullet Protrusion: 0.73" 18.420 mm Add the case length to these numbers to determine the maximum and minimum cartridge overall length that is possible with this bullet.
Max Bullet Protrusion: 1.02" 26.000 mm
Bullet conforms to CIP and SAAMI for magazine length. Check the magazine length of your rifle for suitability with this bullet.
Maximum M/V: 4300fps 1,311 m/s If the maximum muzzle speed is exceeded, dynamic stabilty problems may be encountered.
Short Range Twist: 7.2" / 184 mm or tighter 28.3 Cal/length or tighter Twist recommended if average hunting distances are 270 yards or 250 m. A tighter twist can be used.
Twist: Sg = 1.5: 8.0" / 199 mm 30.7 Cal. in length General hunting twist for average distances to 540 yards or 500 m.  A tighter twist can be used.
Minimum Twist: 8.75" / 222.25 mm 34.2 Calibers in length The twist required for stable flight and good terminal performance further than 540 yds or 500 m.
Minimum Impact Speed: 1650fps 503 m/s At this impact speed, the bullet will open to at least double caliber.
Calculated Ballistic Coefficient - G1 profile  
BC = 0.486 4300 fps to 2975 fps 1,311 m/s to 907 m/s BC values are calculated at standard Metro values and serve as a comparison between GSC bullets.  Any comparison with the BC values of other manufacturers is not valid as there is currently no standard method in use between manufacturers.
BC = 0.415 2975 fps to 1650 fps 907 m/s to 503 m/s
BC = 0.398 1650 fps to 0 fps 503 m/s to 0 m/s

Suitable Cartridges, with consideration of the above specifications:

6.5x55 Swedish, 6.5x55 Skan, 6.5x53RMannl, 6.5x54MSch

NOTES
A Gyroscopic Stability (Sg) greater than 1.1 is required for stable flight with HV and HP bullets. For hunting at average 540yds/500m, an Sg of up to 1.5 or more can be used. For longer distances the Sg can be decreased but never less than 1.1.
*Note that Sg increases as twist tightens.  *A 1:10" twist is tighter than a 1:12" twist within a given caliber only. *Twist rates given in caliber lengths can be compared across calibers. *Choose a bullet length best suited to your rifle twist and type of shooting.  *When a bullet is specified for a given twist rate, it can also be used in any twist that is tighter.  Using it in a slower twist than specified, is not advisable. *Some experimentation will be required to determine exact drop tables for your equipment and location.