. . . . on a defensive arm porting is dangerous. The first time you shoot from retention you may end up permanetly damaging your eyes. A weapon purchased for self defense if it is ever actually used has a high likelyhood of being used at very close range.
I have a Taurus 85 snub with porting, and it does indeed shoot fire and bits of metal past, or into, the face if held close to the body, speed-rock style. My wife got a pretty good ding on her forehead from a piece of jacket material shaved off and routed through the port holes. In practice we always wear close fitting protective glasses but using the snub in "the real deal" could indeed be debilitating for the shooter as well as the target.
I already have bad eyes: I always was short-sighted, but since about 3 years, I'm also far-sighted!!! It's nice to become old!!!" title="" border="0"/> With my glasses, I can see the target, but no more the gun's sight, without them, it's the contary!