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.308" 177gr HV
 
Bullet Number Bore Diameter Groove Diameter Suitable for Calibres
308177HV198 7.62mm 0.300" 7.82mm 0.308" We suggest that this bullet be used for hunting beyond 500m.  It can be used in 1:9" twist for closer than 500m. Conditions can cause variations in this recommendation, but we give it as a general guide to application.
Length Nose Length Weight
40mm 1.58" 20.8mm 0.82" 177gr 11.5g
Speed 1006m/s 3300fps 747m/s 2450fps 488m/s 1600fps Min Impact Speed
BC .638 .603 .589 488m/s 1600fps
Guidelines for Stability Factor, Twist Rate and COL:

Choose a bullet length best suited to your rifle twist and type of hunting.

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

Bush and dangerous game hunting

S/F greater than 1.6 is required. There is no upper limit to the S/F here. If this bullet does not meet the requirement, use a shorter bullet.

General hunting to 500m/yds

S/F greater than 1.4 is required. There is no upper limit to the S/F here. If this bullet does not meet the requirement, use a shorter bullet.

Long range beyond 500m/yds

S/F greater than 1.1 is required but more than 1.5 is not desirable. If this bullet S/F is too high, use a longer bullet. If too low, use a shorter bullet.

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 22.8mm / 0.90"
Maximum 30.0mm / 1.18"
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 calibre list for your calibre.


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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