HOME
ABOUT US
HV BULLETS
FN BULLETS
HP BULLETS
SP BULLETS

ACCESSORIES

GALLERY
THEY SAY
ACCURACY

TECHNICAL DATA

FAQ
ARTICLES

LOAD DATA

USEFUL STUFF
DISTRIBUTORS
ORDERS
SITE MAP
CONTACT US


LOAD DATA FOR  HP  BULLETS

Medium Calibres from .270"/6.8mm   to   .333"/8.46mm

Do not use the load data below for any other type of bullet.
This data only applies to GS Custom HP bullets.

See the Technical Data page for assistance with the correct choice of bullet and for BC values.

Read the following notes before going to the load data table below.

Calibre: If your caliber is not listed, please email us for assistance.

Bullet: Bullet numbers consist of the caliber (318) the weight (180gr) the bullet type (FN) and the part number (019
).

Twist: The twist is indicated as one rotation in the number of inches shown. Bear in mind that if a bullet is indicated for a particular twist, it can also be used in faster twist rates (smaller numbers), but not in slower twist rates (bigger numbers). See the Technical Data page for more information about the correct bullet choice.

Powder: Listed powders are chosen to give a combination of the best case fill, most complete burn in a 24"barrel and lowest muzzle pressure.

Start gr: The indicated start load in grains is a safe load in our experience. It may give maximum speed in some rifles and can be reduced if needed.

MAX FPS: This is the speed at which maximum allowed pressure is likely to occur in a 24" barrel. Adjust the number by the amount given in the FPS/Inch column for barrels longer or shorter than 24". Do not exceed the adjusted MAX FPS number.

FPS/Inch: This is the speed change that is probable for barrels longer or shorter than 24" with the indicated powder.

COL/mm: Is the cartridge overall length in millimetres on which the load data is based.  Divide by 25.4 for Inches. This is not a recommendation - merely the number we used to generate the data.  Your rifle will determine, according to the load guidelines, what its COL will be.

Case Fill: Is approximately how much the charge will fill the case. Compressed charges up to 105% are not unusual. Full cases give better accuracy and more consistent speeds. This is a guide line only and the numbers may vary depending on the make of the case and the capacity. If this column contains CC, case capacity will probably be the limiting factor rather than MAX FPS.

Burn: Is the percentage of powder that will burn in a 24" barrel. Accuracy is improved with a more complete burn.

M/PSI: Is the approximate muzzle pressure at MAX FPS. This is an indication of what the recoil will be. With the same bullet and rifle, lower muzzle pressure will have less recoil.

Load Data for Medium Calibres from .270"/6.8mm   to   .333"/8.46mm
Go to Small Calibres / Large Calibres

Have you read the notes above?  If not, do so before using this load data table.

 
Calibre Bullet Twist Powder Start gr MAX FPS

FPS/Inch

COL/mm % Fill Burn M/PSI
8x57J 318180HP019 12 ADI AR 2206 41 2600 21 82 93 99 7029
      IMR 3031 41 2700 21 82 97 100 7160
      IMR 4895 43 2725 23 82 98 100 7652
      Norma 203B 44 2700 22 82 98 99 7923
      S 355 44 2700 22 82 102 99 7770
      Viht N530 41 2675 21 82 90 100 7407
      W 748 43 2700 22 82 90 100 7592
Calibre Bullet Twist Powder Start gr MAX FPS

FPS/Inch

COL/mm % Fill Burn M/PSI
                     
                     
                     
                     
                     
                     
Calibre Bullet Twist Powder Start gr MAX FPS

FPS/Inch

COL/mm % Fill Burn M/PSI
                     
                     
                     
Calibre Bullet Twist Powder Start gr MAX FPS

FPS/Inch

COL/mm % Fill Burn M/PSI

Top of Page


HOME
ABOUT US
HV BULLETS
FN BULLETS
HP BULLETS
SP BULLETS

ACCESSORIES

GALLERY
THEY SAY
ACCURACY

TECHNICAL DATA

FAQ
ARTICLES

LOAD DATA

USEFUL STUFF
DISTRIBUTORS
ORDERS
SITE MAP
CONTACT US

GS Custom Bullets, situated in Port Elizabeth on the East Coast of South Africa, manufactures solid copper, turned, monolithic hollow point 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.