.308 Winchester

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 Winchester
Bullet Type - .22/sabot
Bullet Weight - 55
Bullet Diameter (IN) - .308
Overall Cartridge Length (IN) - 2.5
Case Length (IN) - 2.005
Full Case Capacity (GR WATER) - 56
Bullet Length (IN) - .72
Barrel Length (IN) - 22
Bullet Seating Depth (IN) - .225
Displaced Water (GR) - 4.231
Effective Water Capacity Of Case (GR) - 51.769
Effective Barrel Length (IN) - 20.22

**lfd1 Cartridge Load Development** 04-26-93

Cartridge Data - .308 Winchester
Caliber - .308 IN
Bullet Weight - 55 GR
Barrel Length - 20.22 in
Case Capacity - 51.769 GR Of Water (CALC)
Bullet Diameter- .308 in
Sectional Density - .083
Volume Ratio - 8.2
Cartridge Tempreture - 70 Degrees F.
Powder Class - FAST POWDERS
Powder Type - IMR-4198/RX7/S-4197/IMR-3031 H322 *Check Manual*
Charge/Bullet Weight - 0.753
Calc. Powder Charge - 41.4 GR
Load den - 79.9%
Est. Muzzle Velocity - 3800 FT/SEC
Est. Peak Pressure - 38900 PSI

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

**Alternate load information** 04-26-93

Cartridge Data - .308 Winchester
Powder Type - IMR-4198/RX7/S-4197/IMR-3031 H322 *Check Manual*

Load Density
% Charge Weight
GR Velocity
FPS Pressure
PSI

75 38.8 3600 34200

80 41.1 3800 38900

85 44.0 4000 43900

90 46.6 4300 49300 *

95 49.2 4500 54900 *

100 51.8 4800 60900 *

* Warning -- HIGH PRESSURE - REFERENCE ONLY !