I assume you're asking about DA trigger pull on a DA revolver. I rarely shoot my DA revolver in SA mode, but when I do, I use the tip of my finger. In DA mode, though, with as high a grip as I can get, I seat the trigger just behind the 1st joint, and I feel like I can control the pull better. Plus, it's flat out easier to pull.
However....when I follow the front sight during recoil, I notice the the muzzle doesn't rise straight up; rather, it goes slightly off to the right, say slightly past 1:00. I may be wrong on all this, but to me, this indicates the back of the gun isn't seated in the exact center of my hand web, but more towards my thumb joint, and that the 1:00 recoil may be an indicator that my pull isn't perfect and is pulling the gun to the right. When I try to seat the gun in the center of the web, though, the trigger lies in front of the 1st joint, and makes the pull much more difficult and jerky. I've tried dry fire practice with this re-adjusted position, but it just ain't workin' for me.
My thought then is to try to seat the gun in the center of your web and let your finger fall where it does, and observe where the muzzle goes during recoil. If you're able to shoot DA smoothly and accurately like that, keep it there. If not, adjust the position so your finger can pull the trigger smoothly. Of course, dry fire may be a great way to work on this.