Porting involves precision-drilled holes also called ports in the barrel and/or slide on pistols, shotguns and revolvers. These ports reduce recoil by diverting the gases expelled before the departure of a projectile. The gases are directed out the top of the barrel which forces the barrel down.

What are the benefits of a ported barrel?

Pros. Having the barrel ported has a wonderful application for those shooters seeking faster follow-up shots on target. The ports on the barrel are for reducing recoil by allowing the expanding gases to sort of thrust the end of the pistol downward. Great for competition shooters!

Is a ported barrel louder?

ported barrels are a little louder to the shooter, but a LOT louder to the people on either side of the shooter. As has been stated earlier in the thread, the gun probably isn't any louder, but the noise is directed toward the sides rather than to the front.