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264" 120gr SP
 
Bullet Number Bore Diameter Groove Diameter Suitable for Calibers (Subject to twist)
264120SP253 6.50mm .256" 6.71mm .264" .264" calibers subject to twist
Length Nose Length Weight
38.9mm 1.53" 21.5mm 0.85" 120gr 7.8g
Speed 1006m/s 3300fps 686m/s 2250fps 366m/s 1200fps Min Impact Speed
BC .681 .608 .453 366m/s 1200fps
Guidelines for Stability Factor, Twist Rate and COL: Choose a bullet length best suited to your rifle twist and type of shooting.

Note that S/F increases as twist tightens.  A 1:10" twist is tighter than a 1:12" twist.

A Stability Factor greater than 1.1 is required.  Any combination of twist rate and bullet length that does not give at least that, is not suitable.  SP bullets are non expanding spitser type bullets and are not recommended for hunting unless you have a specific application.  For use under 500m, a Stability Factor of 1.5 or greater can be used. For distances beyond 500m the stability factor can be decreased but must never be less than 1.1. Some experimentation will be required to determine the best combination for your particular atmospheric conditions.

COL: To determine the minimum and maximum cartridge overall length with this bullet, add the minimum or maximum values to your cartridge case length. Minimum 23.5mm / 0.92"
Maximum 31.4mm / 1.24"
On the chart to the right:

1. Select the twist rate of your rifle on the horizontal axis and read the S/F on the vertical axis.

2. Use the guidelines above to determine suitability for your application.

3. Check the caliber list for your caliber.


GS Custom Bullets, situated in Port Elizabeth on the East Coast of South Africa, manufactures solid copper, turned, monolithic bullets for hunting and sport shooting. These bullets are used by hunters on several continents, hunting from the smallest of antelope to the largest of dangerous game, using the smooth HP bullet, as well as the more popular HV, FN and SP bullets with the patented drive band concept. GSC bullets are configured for the highest possible ballistic coefficients. SP bullets are mainly used for sport shooting. All GS Custom Bullets are moly coated.

 

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