New shooter?? Same thang happens with a 357mag or 44 or !!!! Pick one bullet to shoot or log the different loads so you can adjust depending on the load used. Guess you bought it for grizzly?? pick a heavy hardcast and be done with it unless you carry some 500 sp loads for thin skinned hunting too. If you have a centefire rifle and you change bullet weights are even brands you will have to re-adjust your sites.
grizz you picked a heck of a revolver to learn about bullet weights and where a bullet stricks when you change anything. Start with a .22lr. The differnce between a 22 short and 22 standard velocity and a stinger at 25 yards will teach you the same thing.
Generally speaking, a heavy, slower bullet will impact higher than a light, faster bullet. Believe it or not, the upward recoil forces will actually have the gun poiniting up before the bullet leaves the muzzle.
In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball