Quote Originally Posted by BillPa View Post
Another old myth.

As I mentioned before, powder burn is independent of barrel length. All the powder that WILL BURN has burnt at or shortly after peak chamber pressure, why pressures drop off rapidly after the peak as the chamber volume increases. A longer barrel ( usable bore length) only allows the resultant pressure of the gases from the powder burn more time to continue accelerating a bullet.


Rocky explains it a lot better here > http://www.shootersforum.com/handloa...rt-barrel.html

Bill
Bill that's very interesting!