I shoot minies all the time. Do they move? Short answer, maybe. If your minie is way undersized and you handle your rifle roughly with muzzle pointing down, then it's possible. The issues stated previously with cavalry, let's think that one through, horse galloping, walking trotting, yup, there's enough vibration to cause it. Just walking around hunting and not seriously vibrating the gun- no. Think it through, experiment by walking around with the gun all day and check to see if it's moved. My bet is-no.