Thread: Hangfires with reduced loads

well that took some reading.....a few we gems hidden in there including something shootersnz and I have discussed before.....the lenght of barrel VS sound/velocity it confirms what Ive always thought...a longer (than normal/optimal) barrel is slower/quieter the theory as explained in link is the gas pressure generated will push projectile for so far (say 16") along barrel and AFTER that distance its no longer being pushed so is slowing down with friction on rifling and gets quieter (this bit was an eye opener) as the explosion has room to happen so doesnt all happen out the end of muzzle.......how a suppressor works..

this explains why someone with a say 24" barreled .308 will get subsonic load with MORE powder than someone with a say 14" barrel and the 14" barrel developed load will be very slow in longer barrel (and why I am using such a pitiful small amount in my 7.62x39mm with oversized short barrel--stuff all resistance)