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338240FN085 Technical Profile © Application: Hunting (Solid)

Barrel Bore Diameter: 0.330" 8.380 mm The diameter of the barrel from land to land.

Barrel Groove Diameter: 0.338" 8.590 mm The diameter of the barrel from groove to groove.

Bullet Weight: 238gr 15.4g Bullets are guaranteed to weigh within 0.25% of the stated weight.

Bullet Length: 1.34" 34.000 mm

Conical Ogive Length 0.55" 14.000 mm These dimensions are critical to consistent external ballistic performance and are held constant to within 0.005 mm (0.0002")

Meplat Diameter: 0.18" 4.500 mm

Min Bullet Protrusion: 0.64" 16.170 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: 1.02" 26.000 mm

Bullet conforms to CIP and SAAMI for magazine length. Check the magazine length of your rifle for suitability with this bullet.

Maximum M/V: 3500fps 1,067 m/s If the maximum muzzle speed is exceeded, dynamic stabilty problems may be encountered.

Minimum Twist rate: 10" / 254 mm 30.31 Calibers For linear penetration, select a bullet that meets or exceeds the minimum recommended twist rate.

Calculated Ballistic Coefficient - G1 profile

BC = 0.197 3500 fps to 2350 fps 1,067 m/s to 716 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 = 0.186 2350 fps to 1200 fps 716 m/s to 366 m/s

BC = 0.218 1200 fps to 0 fps 366 m/s to 0 m/s

Suitable Cartridges, with consideration of the above specifications:

338WinMag

NOTES

A Gyroscopic Stability (Sg) greater than 2.0 is preferred for FN 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.

338240FN085 Technical Profile © Application: Hunting (Solid)

Barrel Bore Diameter:	0.330"	8.380 mm	The diameter of the barrel from land to land.
Barrel Groove Diameter:	0.338"	8.590 mm	The diameter of the barrel from groove to groove.
Bullet Weight:	238gr	15.4g	Bullets are guaranteed to weigh within 0.25% of the stated weight.
Bullet Length:	1.34"	34.000 mm
Conical Ogive Length	0.55"	14.000 mm	These dimensions are critical to consistent external ballistic performance and are held constant to within 0.005 mm (0.0002")
Meplat Diameter:	0.18"	4.500 mm
Min Bullet Protrusion:	0.64"	16.170 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:	1.02"	26.000 mm
Bullet conforms to CIP and SAAMI for magazine length.			Check the magazine length of your rifle for suitability with this bullet.
Maximum M/V:	3500fps	1,067 m/s	If the maximum muzzle speed is exceeded, dynamic stabilty problems may be encountered.
Minimum Twist rate:	10" / 254 mm	30.31 Calibers	For linear penetration, select a bullet that meets or exceeds the minimum recommended twist rate.



Calculated Ballistic Coefficient - G1 profile
BC = 0.197	3500 fps to 2350 fps	1,067 m/s to 716 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 = 0.186	2350 fps to 1200 fps	716 m/s to 366 m/s
BC = 0.218	1200 fps to 0 fps	366 m/s to 0 m/s
Suitable Cartridges, with consideration of the above specifications:

338WinMag


NOTES
A Gyroscopic Stability (Sg) greater than 2.0 is preferred for FN 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.