To keep the safty level very high, you can always let your shooting buddy stand at the firing line holding the weapon. You sprint a predetermined distance and back to the weapon and start your shot string. This way you will not be running with a loaded weapon. You could load the weapon after the sprint, also. We have done this...I was not impressed with my results either. I did learn some though....like I need to practice!
...even a blind hog finds an acorn every once in a while.