I shoot two MX-8s in sporting competition. One was ported when I got it, and had been threaded for choke tubes, Briley S-1 series. The other is unported and has fixed .020" and .020" chokes. I shoot the latter 95% of the time. I shoot it better, even though when I switch to the other one I change buttstocks so that I'm shooting the same gunfit.
If it reduces muzzle flip on a MX-8, 32" barreled gun, it is so insignificant that I can't tell the difference. If I thought porting would gain me one target in a 200 bird event, just one, I would not hesitate to shoot the ported gun. I don't.
JMHO, Stan
