More Chrony testing: Primers, Powder, OAL.
24" 6.5 Grendel
Elev. 2100 ft, Baro. 26.1, Temp 80*f, Relative Humidity 55%, Cloud Cover 10%,
After compiling these results; I have come to believe that Winchester large rifle primers (for the lack of a better word) SUCK! But they seem to be ok for Forming brass with low charge wts. though.