458760HV300 Technical Profile © Application: Long Range Hunting

Barrel Bore Diameter: 0.450" 11.430 mm The diameter of the barrel from land to land.
Barrel Groove Diameter: 0.458" 11.630 mm The diameter of the barrel from groove to groove.
Bullet Weight: 760gr 49.2g Bullets are guaranteed to weigh within a quarter percent of the stated weight.
Bullet Length: 2.88" 73.060 mm
Tangent Ogive Length: 1.71" 43.323 mm These dimensions are critical to consistent external ballistic performance and are held constant to within 0.005 mm (0.0002")
Meplat Diameter: 0.11" 2.700 mm
Min Bullet Protrusion: 1.79" 45.530 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: 2.32" 59.000 mm
CIP and SAAMI cartridge overall length (COL) not observed or does not apply. Check the COL of your rifle for suitability with this bullet as described above. Check the magazine length of your rifle for suitability with this bullet.
Maximum M/V: 5200fps 1,585 m/s If the maximum muzzle speed is exceeded, dynamic stabilty problems may be encountered.
Minimum Impact Speed: 1600fps to 1700fps 488 m/s to 518 m/s At this impact speed, the bullet will open to at least double caliber.

Twist Rates are guidelines but the Minimum Twist must be observed 
Twist: Sg = 1.4: 10.7" / 271 mm 23.7 Calibers General hunting twist for average distances to 680 yards or 630 m. A tighter twist (smaller number) can be used.
Minimum Twist: 12" / 304.8 mm 26.7 Calibers The slowest twist required for stable flight and good terminal performance further than 1030 yds or 950 m. See 'Notes' below.

Calculated Ballistic Coefficient - Standard Metro G1 profile. Based on: Cd = 0.169

BC = 1.428 Maximum M/V to 3400 fps Maximum M/V to 1,036 m/s Any comparison with the BC values of other manufacturers is not valid as there is currently no standard method in use between manufacturers.  These BC values are only for use in an external ballistics program. Use the three values, as given, to approximately calculate BC for your launch speed and distance. For exact numbers, shoot drop tables at the elevation and temperature for your location.
BC = 1.140 3400 fps to 1600 fps 1,036 m/s to 488 m/s
BC = 1.049 1600 fps to 0 fps 488 m/s to 0 m/s

Suitable Cartridges, with consideration of the above specifications:

- Use the specification sheet above to determine whether this bullet is suitable for the cartridge you want to use, if it is not listed.

NOTES
A Gyroscopic Stability (Sg) greater than 1.1 is required for stable flight with HV and HP bullets. For hunting under 680yds/630m, an Sg of up to 1.4 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.