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.366" 245gr HP
 
Bullet Number Bore Diameter Groove Diameter Suitable for Calibers (Subject to twist)
366245HP025 9.00mm .354" 9.28mm .365" 9.3X57 / 62 / 64 / 74R
Length Nose Length Weight
37.7mm 1.48" 18.8mm 0.74" 245gr 15.9g
Speed 853m/s 2800fps 671m/s 2200fps 488m/s 1600fps Min Impact Speed
BC .414 .421 .421 488m/s 1600fps
Guidelines for Stability Factor and Twist Rate:

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.

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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