My personal take on the subject is, If you can control the pistol with out any problems, leave it alone. If the muzzle jump bothers you to the point of not shooting it well then by all means port it. I have a 45/70 Encore pistol that I cut down to 10" (just for the fun of it). I could not hit the side of a barn with it because of the severe muzzle jump. I could feel the barrel brushing my hair every time I fired it. It was totally uncontrollable. I put two rows of ports on the last 1-1/2" of barrel consisting of five 3/16" holes at 45 degrees from center, and four at 90 degrees with a 10 degree rearward angle. This done to both sides. 18 holes total. This directed some of the gasses rearward as well as upward. Out come, It was a totally deferent gun. I can reasonably hit what I am aiming at and it has almost no muzzle flip. But as GB stated, the rearward recoil pounds the palm of the hand. I was also shooting full house 405gr loads in this pistol. KN