224088SP212 Technical Profile © Application: Target / Tactical |
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Barrel Bore Diameter: | 0.219" | 5.560 mm | The diameter of the barrel from land to land. |
Barrel Groove Diameter: | 0.224" | 5.690 mm | The diameter of the barrel from groove to groove. |
Bullet Weight: | 88gr | 5.7g | Bullets are guaranteed to weigh within 0.25% of the stated weight. |
Bullet Length: | 1.43" | 36.300 mm | |
Tangent Ogive Length: | 0.83" | 21.016 mm | These dimensions are critical to consistent external ballistic performance and are held constant to within 0.005 mm (0.0002") |
Meplat Diameter: | 0.02" | 0.556 mm | |
Min Bullet Protrusion: | 0.88" | 22.440 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: | 1.10" | 28.000 mm | |
Bullet does not conform to CIP and SAAMI for magazine length. | Check the magazine length of your rifle for suitability with this bullet. | ||
Maximum M/V: | 3600fps | 1,097 m/s | If the maximum muzzle speed is exceeded, dynamic stabilty problems may be encountered. |
Twist: Sg = 1.5: | 5.0" / 128 mm | 23.0 Cal. in length | The twist required to give a calculated Sg 1.5 |
Minimum Twist: | 5.5" / 139.7 mm | 25.1 Calibers in length | The twist required for stable flight and the best long range tractability more than 710 yds or 650 m. |
Calculated Ballistic Coefficient - G1 profile | |||
BC = 0.700 | 3600 fps to 2400 fps | 1,097 m/s to 732 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 = 0.601 | 2400 fps to 1200 fps | 732 m/s to 366 m/s | |
BC = 0.443 | 1200 fps to 0 fps | 366 m/s to 0 m/s | |
Suitable Cartridges, with consideration of the above specifications: |
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.224" Calibers |
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NOTES |
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A Gyroscopic Stability (Sg) greater than 1.2 is required for SP bullets. For use under 710yds/650m an Sg of up to 1.5 or even greater can be used. For distances beyond 710yds/650m, the Sg can be decreased with a slower twist, but never less than 1.2 for GSC SP bullets. | |||
*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. | |||