Re: SS109 loads?
Ok, I just checked my data book. Several months ago I wanted to make some 5.56 "failure rounds" that would fire, but not cycle the bolt. I got a hold of 100 of the 62 grain green tipped rounds and tested them. I took apart 20 of them and this was the stats:
1) OAL was 2.247"
2) Unknown powder charge was an average of 26.2 grains.
3) Average velocity thru chronograph was 2965 FPS
4) Unknown primer.
5) Lake City Arsenal cases.
Temp: 84 degrees Faren.
Humid: 69%
Pressure: 30.11
I made some of my own rounds using the green tipped 62 grain bullets. I used remington cases with Winchester small rifle primers & 24 grains of Varget powder. This gave me velocities in the mid 2900 FPS. Very comparable to the original military rounds.....hope this helps.