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LOAD DATA FOR  SP  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 SP 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.

Cartridge: If your cartridge is not listed, please email us for assistance.

Bullet: Bullet numbers consist of the caliber (first three digits) the weight in gr (next three digits) the bullet type (two letters) and the part number (three digits). Bullets in green are the preferred bullets for general use in standard calibers.

Twist: The twist is indicated as one rotation in the number of inches shown. 
This is a minimum number. When a bullet is indicated for a twist rate, 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. If a powder is not listed, the powder on the list gives better performance or the unlisted powder is new and has not been tested.

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. It is not a minimum load and it is not supposed to give the speed as shown in the MAX FPS column.

MAX FPS: This is the speed at which maximum allowed pressure is likely to occur in a 24" barrel. It is not the recommended speed. 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. Whatever charge is required to reach the MAX FPS (P/Max ) is the maximum charge for that rifle. We recommend 50fps to 100fps under maximum as a good general load.

FPS/Inch: This is the speed change that is probable for barrels longer or shorter than 24" with the indicated powder.
Add or subtract the value in this column for every inch the barrel is longer or shorter than 24".  All load data is configured for 24" barrels except where it is stated otherwise.

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.  Compression is not bad, providing it does not cause mechanical problems such as COL changes or case bulging that prevents chambering. 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.

Cartridge Bullet Twist Powder Start gr MAX FPS FPS/Inch % Fill Burn M/PSI
6.8 Rem SPC 270099SP217 11&12 ADI AR 2205 19 2700 17      
P/Max = 55000psi      A 5744 19 2850 20      
      Rel 7 22 2875 19      
      Norma 200 24 2925 21 CC    
      S265 19 2725 17      
      Win 296 20 2900 19      
Cartridge Bullet Twist Powder Start gr MAX FPS FPS/Inch % Fill Burn M/PSI
270 Winchester (SAAMI) 270105SP187                
P/Max = 65000psi                   
                   
      S365 59 3550 34 CC     
                   
                   
Cartridge Bullet Twist Powder Start gr MAX FPS FPS/Inch % Fill Burn M/PSI
270 WSM 270105SP187                
P/Max = 64542psi                   
                   
      S385 70 3800 38      
                   
                   
Cartridge Bullet Twist Powder Start gr MAX FPS FPS/Inch % Fill Burn M/PSI
7mm Rem Mag 284115SP180 10 ADI AR 2206H 58 3575 37 91 100 13035
P/Max = 62366psi      Ramshot BigGame 64 3600 38 96 100 13560
      Rel - 17 64 3650 38 95 100 13174
      Norma URP 66 3625 38 103 100 14068
       S365 68 3650 37 106 100 13758
       Viht N550 66 3625 39 100 100 14203
  284125SP165 9 ADI AR 2208 58 3400 33 95 100 12516
      Accurate 4350 64 3500 35 106 100 13782
      Rel - 17 62 3500 35 94 100 13489
      Norma URP 64 3500 35 102 100 13729
      S365 66 3500 35 104 100 13397
      Viht N550 64 3500 36 99 100 13873
Cartridge Bullet Twist Powder Start gr MAX FPS FPS/Inch % Fill Burn M/PSI
                   
P/Max =                    
                   
                   
                   
                   
Cartridge Bullet Twist Powder Start gr MAX FPS FPS/Inch % Fill Burn M/PSI
308 Win 308112SP043 14              
P/Max = 60191psi                   
                   
                   
                   
                   
  308119SP205 13 ADI AR 2219 42 3325 26 101 100 7810
      A2015 43 3275 23 106 100 7304
      Ramshot X-Terminator 44 3325 26 102 100 7828
      H322 42 3325 26 107 100 7810
      Norma 200 41 3275 25 96 100 7219
      S335 45 3250 25 CC 100 7372
  308137SP157 12 ADI AR 2219 40 3025 23 98 100 6988
      S321 43 3025 24 104 99 7469
      A2520 44 3050 24 CC 100 7407
      H335 42 3025 24 99 100 7208
      Viht N530 40 3025 23 104 99 7334
      Win 748 43 3075 24 104 99 7570
  308158SP249 12 ADI AR 2219 36 2775 20 97 100 6458
      H322 36 2775 19 103 100 6458
      Rel 10X  34 2755 19 101 100 6073
      Norma 201 38 2775 21 104 99 6865
      S321 39 2800 22 103 99 6993
       Ramshot TAC 39 2800 21 103 99 6945
  308167SP207 10 ADI AR 2207 34 2725 17 97 100 6444
  308168SP278 10 Accurate 2230 46 2700 20 99 100 6231
      Rel-12 35 2700 19 102 100 5982
      Norma 201 36 2725 20 104 100 6880
      Somchem S321 47 2750 20 102 100 7018
      Viht N530 35 2700 20 103 99 6858
Cartridge Bullet Twist Powder Start gr MAX FPS FPS/Inch % Fill Burn M/PSI
30-06 Springfield 308112SP043  16               
P/Max = 58740psi                   
                   
                   
      S 335 54 3350 30 101 100 8385
                   
  308137SP157 12 ADI AR2219 48 3200 27 90 100 8952
      IMR 3031 50 3250 29 95 100 9780
      Win 748 53 3250 29 95 100 9780
      Norma 202 51 3200 28 100 100 9299
      S321 53 3225 30 96 100 9673
      Viht N530 50 3200 29 95 100 9517
  308167SP207 10 ADI AR 2206H 46 2825 24 94 100 8310
  308168SP278 10 A2520 49 2925 24 97 100 8785
      Rel 15 49 2950 26 100 100 9039
      Norma 203B 49 2950 26 100 100 9456
      S 355 50 2925 27 104 100 9262
      Win 748 48 2925 26 91 100 8992
Cartridge Bullet Twist Powder Start gr MAX FPS FPS/Inch % Fill Burn M/PSI
300 WSM  308137SP157 12 ADI AR2206H 58 3275 28 95 100 9355
P/Max = 64542psi      H380 64 3375 31 100 100 10675
      Ramshot BigGame 65 3400 31 105 100 10714
      S355 63 3350 30 103 100 11123
      Norma 203B 62 3375 31 100 100 10531
      Viht N550 66 3425 32 106 100 11206
  308167SP207 10 ADI AR 2208 56 3075 25 100 100 9924
  308168SP278 10 Ramshot BigGame 59 3125 28 100 100 10466
      Rel-17 59 3200 27 99 100 10681
      Somchem S365 65 3150 26 CC 100 10391
      Norma 203B 56 3100 26 98  100 10237
      Viht N550 61 3150 28 104 100 11022
  308197SP204 8 ADI AR 2208 49 2800 22 98 100 9012
      Ramshot Hunter 57 2900 22 106 100 10343
      Rel - 17 53 2900 23 97 100 9704
      S355 51 2825 22 100 100 9090
      Norma URP 55 2900 23 105 100 9879
      Viht N550  55 2900 23 102 100 10025
Cartridge Bullet Twist Powder Start gr MAX FPS FPS/Inch % Fill Burn M/PSI
300 Winchester Magnum 308167SP207 10 ADI AR 2208 61 3050 28 93 100 10751
P/Max = 62366psi  308168SP278 10 H 4350 68 3150 30 99 100 12042
  Data for the   Ramshot Hunter 71 3150 30 97 100 12214
  two above are   Norma URP 67 3125 30 99 100 11718
  interchangeable   S 365 69 3125 29 102 100 11406
      Viht N550 67 3125 30 97 100 11860
  308197SP204 8 ADI AR2208 54 2800 23 92 100 9722
      H 4350 61 2875 26 99 100 10897
      Rel-19 64 2900 27 103 100 11499
      Norma MRP 68 2975 27 105 100 12265
      S365 62 2875 24 101 100 10323
      S385 65 2850 26 103 100 10984
Cartridge Bullet Twist Powder Start gr MAX FPS FPS/Inch % Fill Burn M/PSI
                   
P/Max =                    
                   
                   
                   
                   
Cartridge Bullet Twist Powder Start gr MAX FPS FPS/Inch % Fill Burn M/PSI
 
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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 coated.