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.308 Norma Magnum

*Please keep in mind that the data is for reference only*

*case capacity calculations*
----------------------------------
*Caution*
Cartridge case capacity may vary 5-10% between brands.
Cartridge type - .308 Norma Magnum
Bullet Type - .22/sabot
Bullet Weight - 55
Bullet Diameter (IN) - .308
Overall Cartridge Length (IN) - 2.97
Case Length (IN) - 2.55
Full Case Capacity (GR WATER) - 87
Bullet Length (IN) - .72
Barrel Length (IN) - 24
Bullet Seating Depth (IN) - .3
Displaced Water (GR) - 5.641
Effective Water Capacity Of Case (GR) - 81.359
Effective Barrel Length (IN) - 21.75

**lfd1 Cartridge Load Development** 04-26-93
----------------------------------------------------------
Cartridge Data - .308 Norma Magnum
Caliber - .308 IN
Bullet Weight - 55 GR
Barrel Length - 21.75 in
Case Capacity - 81.359 GR Of Water (CALC)
Bullet Diameter- .308 in
Sectional Density - .083
Volume Ratio - 5.9
Cartridge Tempreture - 70 Degrees F.
Powder Class - MEDIUM FAST POWDERS
Powder Type - IMR-3031, RX11,H-335, AA-2230, S-3032, WW-748, N-201 *Check Manual*
Charge/Bullet Weight - 1.273
Calc. Powder Charge - 70 GR
Load den - 86%
Est. Muzzle Velocity - 4300 FT/SEC
Est. Peak Pressure - 40200 PSI
Alt Powder type: - BLC-2, H-322, RX-12, AA-2460, N-203
Powder Class - MEDIUM FAST POWDERS
Charge/Bullet Weight - 1.336
Calc. Powder Charge - 73.5 GR
Load den - 90.3%
Est. Muzzle Velocity - 4400 FT/SEC
Est. Peak Pressure - 42500 PSI

***For starting loads reduce Calc. powder charge by at least 10%***

**Alternate load information** 04-26-93
---------------------------------------
Cartridge Data - .308 Norma Magnum
Powder Type -  IMR-3031, RX11,H-335, AA-2230, S-3032, WW-748, N-201 *Check Manual*

Load Density       Charge Weight        Velocity              Pressure
       %                         GR                   FPS                      PSI
---------------------------------------------------------------------------
     75                         61.0                  3700                   30500
     80                         65.1                  4000                   34800
     85                         69.2                  4300                   39300
     90                         73.2                  4500                   44000 *
     95                         77.3                  4700                   49000 *
   100                        81.4                   5000                  54400 *

Powder Type -  BLC-2, H-322, RX-12, AA-2460, N-203

     75                         61.0                  3700                   29300
     80                         65.1                  3900                   33300
     85                         69.2                  4100                   37700
     90                         73.2                  4400                   42200 *
     95                         77.3                  4600                   47000 *
   100                        81.4                   4900                  52100 *

* Warning -- HIGH PRESSURE - REFERENCE ONLY !