Thread: Another Trip to the Range

Originally Posted by Oldbloke

This is how I initially tested the powders. Two burns:
Old powder and record burn time over 8"
Burn known fresh powder over 8"
Then check against known burning rates chart.
Then if above looks OK load test ammo starting conservatively.


https://youtu.be/NfUh4EYBXRI?si=TKiBUmz2HHdjvvXA

Words fail me. There may not, and very likely is not, any relationship between the burning speed of powder in the open air and the pressure it develops in a firearm. This is especially so when one of the powders has an unknown source. Just don't do it people.
GPM.