IMR RIFLE DATA

NEVER Exceed the Loads Listed Here

300 Winchester Short Magnum
Cartridge Information
Case:
Winchester
Barrel Length:
24"  
Twist:
1:10"
Trim Length:
2.090"  
Primer:
Winchester WLRM
        
300 Winchester Short Magnum Cartridge Load Data
Starting Loads
Maximum Loads
Bullet Weight (Gr.)PowderBullet Dia.C.O.L.Grs.Vel. (ft/s)PressureGrs.Vel. (ft/s)Pressure
150 GR. SPR GSSPIMR 4350.308"2.780"64.0300650,200 PSI68.0322162,100 PSI
150 GR. SPR GSSPIMR 4320.308"2.780"

57.0

300454,000 PSI61.0317263,900 PSI
150 GR. SPR GSSPIMR 4064.308"2.780"57.0301252,100 PSI61.0319863,300 PSI
150 GR. SPR GSSPIMR 4895.308"2.780"56.0298050,800 PSI60.5317662,300 PSI

180 GR. SFT SCIRIMR 7828.308"2.860"65.0278354,400 PSI69.5C*294362,600 PSI
180 GR. SFT SCIRIMR 4831.308"2.860"62.0279752,700 PSI66.3C2980 62,900 PSI
180 GR. SFT SCIRIMR 4350.308"2.860"61.0280852,800 PSI65.0C2991 63,700 PSI

190 GR. SIE HPBTIMR 7828.308"2.860"64.0270352,100 PSI69.0C*289163,300 PSI
190 GR. SIE HPBTIMR 4831.308"2.860"60.0267949,300 PSI64.0C286761,700 PSI
190 GR. SIE HPBTIMR 4350.308"2.860"60.0275553,200 PSI64.0C292063,700 PSI

200 GR. SFT SPIMR 7828.308"2.790"63.0258050,000 PSI67.5C*279363,100 PSI
200 GR. SFT SPIMR 4831.308"2.790"59.0256549,200 PSI63.7C278062,200 PSI
200 GR. SFT SPIMR 4350.308"2.790"59.0264352,900 PSI63.5C282763,700 PSI

C = Compressed Charge

* Max loads that show an asterisk following the "C" for compressed load will not fit with standard IMR7828. Reduce by 4%.