1r655. I can tell you why you flinch and react to the gun firing. It hurts! Everything from a 25-06 up kicks enough to hurt your shoulder. Your body will not willing let you hurt yourself for long. Your brain is talking to your finger. You can condition yourself with practice. Myself I just go to a smaller gun. Many of the calibers we use for deer hunting have not had a practical use since the dinasours disappeared