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357190HV260 Technical Profile © Application General Hunting

Barrel Bore Diameter: 0.346" 8.780 mm The diameter of the barrel from land to land.

Barrel Groove Diameter: 0.357" 9.060 mm The diameter of the barrel from groove to groove.

Bullet Weight: 190gr 12.3g Bullets are guaranteed to weigh within 0.25% of the stated weight.

Bullet Length: 1.30" 33.100 mm

Secant Ogive Length: 0.73" 18.612 mm These dimensions are critical to consistent external ballistic performance and are held constant to within 0.005 mm (0.0002")

Meplat Diameter: 0.11" 2.700 mm

Min Bullet Protrusion: 0.84" 21.360 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: 0.98" 25.000 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: 3800fps 1 158 m/s If the maximum muzzle speed is exceeded, dynamic stabilty problems may be encountered.

Minimum Impact Speed: 1600fps to 1700fps 488 m/s to 518 m/s At this impact speed, the bullet will open to at least double caliber.

Twist Rates are guidelines but the Minimum Twist must be observed

Twist: Sg = 1.4: 14.7" / 372 mm or tighter 42.4 Calibers or tighter General hunting twist for average distances to 400 yards or 370 m. A tighter twist (smaller number) can be used.

Minimum Twist: 16.5" / 419.1 mm 47.7 Calibers The slowest twist required for stable flight and good terminal performance further than 400 yds or 370 m. See 'Notes' below.

Calculated Ballistic Coefficient - Standard Metro G1 profile

BC = 0.375 Maximum to 2700 fps Maximum to 823 m/s Any comparison with the BC values of other manufacturers is not valid as there is currently no standard method in use between manufacturers. These BC values are only for use in an external ballistics program. Use the three values, as given, to approximately calculate BC for your launch speed and distance. For exact numbers, shoot drop tables at the elevation and temperature for your location.

BC = 0.343 2700 fps to 1600 fps 823 m/s to 488 m/s

BC = 0.337 1600 fps to 0 fps 488 m/s to 0 m/s

Suitable Cartridges, with consideration of the above specifications:

9x57 and 9x57R

NOTES

A Gyroscopic Stability (Sg) greater than 1.1 is required for stable flight with HV and HP bullets. For hunting under 400yds/370m, an Sg of up to 1.5 or more can be used. For longer distances the Sg can be decreased but never less than 1.1.

*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.

357190HV260 Technical Profile © Application General Hunting

Barrel Bore Diameter:	0.346"	8.780 mm	The diameter of the barrel from land to land.
Barrel Groove Diameter:	0.357"	9.060 mm	The diameter of the barrel from groove to groove.
Bullet Weight:	190gr	12.3g	Bullets are guaranteed to weigh within 0.25% of the stated weight.
Bullet Length:	1.30"	33.100 mm
Secant Ogive Length:	0.73"	18.612 mm	These dimensions are critical to consistent external ballistic performance and are held constant to within 0.005 mm (0.0002")
Meplat Diameter:	0.11"	2.700 mm
Min Bullet Protrusion:	0.84"	21.360 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:	0.98"	25.000 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:	3800fps	1 158 m/s	If the maximum muzzle speed is exceeded, dynamic stabilty problems may be encountered.
Minimum Impact Speed:	1600fps to 1700fps	488 m/s to 518 m/s	At this impact speed, the bullet will open to at least double caliber.
Twist Rates are guidelines but the Minimum Twist must be observed
Twist: Sg = 1.4:	14.7" / 372 mm or tighter	42.4 Calibers or tighter	General hunting twist for average distances to 400 yards or 370 m. A tighter twist (smaller number) can be used.
Minimum Twist:	16.5" / 419.1 mm	47.7 Calibers	The slowest twist required for stable flight and good terminal performance further than 400 yds or 370 m. See 'Notes' below.
Calculated Ballistic Coefficient - Standard Metro G1 profile
BC = 0.375	Maximum to 2700 fps	Maximum to 823 m/s	Any comparison with the BC values of other manufacturers is not valid as there is currently no standard method in use between manufacturers. These BC values are only for use in an external ballistics program. Use the three values, as given, to approximately calculate BC for your launch speed and distance. For exact numbers, shoot drop tables at the elevation and temperature for your location.
BC = 0.343	2700 fps to 1600 fps	823 m/s to 488 m/s
BC = 0.337	1600 fps to 0 fps	488 m/s to 0 m/s
Suitable Cartridges, with consideration of the above specifications:

9x57 and 9x57R


NOTES
A Gyroscopic Stability (Sg) greater than 1.1 is required for stable flight with HV and HP bullets. For hunting under 400yds/370m, an Sg of up to 1.5 or more can be used. For longer distances the Sg can be decreased but never less than 1.1.

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.