05-10-2014, 08:10 PM
I found more information on the .300 WinMag MK 248 MK 1. I am not completely sure if this is the current round though.
- Propellant is Hodgdon H1000
- Velocity 2850 fps at 70 degrees F
- Velocity difference from -20F to 165F 75 fps or less.
- Average chamber pressure at 70 degrees F less than 68,100 psi (with whatever the method the military uses)
- Average pressure at -20F and 165F not to exceed 71,500 psi.
All of the specs at : http://usarmorment.com/pdf/300WM_load%20data.pdf
edited to add: Based upon posts by civilians who have shot the round, the comments range from "damn" to "Good Lord, I'll never shoot that stuff again!!"
- Propellant is Hodgdon H1000
- Velocity 2850 fps at 70 degrees F
- Velocity difference from -20F to 165F 75 fps or less.
- Average chamber pressure at 70 degrees F less than 68,100 psi (with whatever the method the military uses)
- Average pressure at -20F and 165F not to exceed 71,500 psi.
All of the specs at : http://usarmorment.com/pdf/300WM_load%20data.pdf
edited to add: Based upon posts by civilians who have shot the round, the comments range from "damn" to "Good Lord, I'll never shoot that stuff again!!"