Barrel Porting

[kcraig514]

Makes sense. I also though when the gas vents and is no longer pushing the bullet, the inertia of the bullet traveling down the last six inches would "pull" the barrel forward possibly causing involuntary movement somewhat like accelerating in a car then letting off the throttle. You go from being pushed back to being pulled forward. IDK, just the ramblings of a semi-mad machinist!