I have a G-34 that I use a glock barrel that has been magna-ported, it does work and makes a difference.
With Atanta Arms 115 at 132pf or the Georgia Arms 115 at 130-132pf works ok.
I shoot USPSA Open/minor and Steel Match with it, I prefer my load of 115gn at 136PF, is flat and very accurate.
People that do not think it made a difference , I drop in a regular barrel and let them shoot it, and then my ported barrel, it shoots nice and flat, true it is not as good as a comp, and I am not shooting major, it does what I like.
SJC built the this set up for me , with a 1lb 10oz trigger, I am spoiled.