While attending the Ft. Lauderdale Gun show yesterday, I came across a rifle, whose barrel on the end was ported. The vendor said that it serves the same or similar function as a barrel with a brake on it. Food for thought in light of pre-filed bills.

Barrel porting is very common on shotguns and handguns.  Not as common on rifles since now days we have them new fangled threaded gizmos.  In the olden tymes, ported rifle barrels were a very expensive fancy upgrade on magnum rifles.  The only problem is you don't know who ported the barrel.

Still somewhat common in some of the larger calibers. I am buying a Winchester 1894 (New Miroku Mfg)  in 450 Marlin. It has a factory ported barrel.

often thought this should be done to all AR barrels