I use the isosceles position. I believe the pistol recoils in a straighter line with this position. I also have an easier time finding the Natural Point of Aim with the isosceles position. Of course, most of my shooting with handguns is done with one hand, anyway and I do not shoot in many combat matches.
Also with the isosceles position, I believe the grip and pressure put on the handgun during recoil is more repeatable. If there are differences in grip and the tension put on the handgun, the result will be inconsistencies in elevation. This is because the barrel of the handgun is in motion before the bullet leaves the barrel. Tighter grip or pressure causes lower shots and looser grip causes higher shots.
If the Natural Point of Aim is not attained, inconsistencies will be from right to left. When the handgun is muscled to point of aim and you are not in the Natural Point of Aim, the handgun has a tendency to go to the natural point of aim as it recoils, causing the differences in windage.
Doug
Also with the isosceles position, I believe the grip and pressure put on the handgun during recoil is more repeatable. If there are differences in grip and the tension put on the handgun, the result will be inconsistencies in elevation. This is because the barrel of the handgun is in motion before the bullet leaves the barrel. Tighter grip or pressure causes lower shots and looser grip causes higher shots.
If the Natural Point of Aim is not attained, inconsistencies will be from right to left. When the handgun is muscled to point of aim and you are not in the Natural Point of Aim, the handgun has a tendency to go to the natural point of aim as it recoils, causing the differences in windage.
Doug