Really? What gun with what port's
I have a Charter Arms Mag Pug .357 with a ported 2.2" barrel.
I've had the gun spit debris back at my face when shooting. To a large degree, it has been an ammo-dependent issue (certain .357 ammo really spits, most .38 doesn't), and I think the problem was worse when new. Perhaps the underside of the ports wasn't relieved enough, and needed some sort of break in period. I'm not an expert on ported guns, so I don't know. Also, to echo Mike Irwin, firing from a high retention position could end up with the shooter getting a face full of burning gas and powder.
Other than that, I like the gun a lot. It's a small, light .357 that carries and shoots well.