A better simulation is to line up 1 gallon water jugs and shoot them. Eventually one of the jugs will stop your bullet. This will give you a decent indication as to your bullet's performance when hitting soft tissue such as a rib cage of a deer. While not an exact replica, it is a very close replica since mamals are made up of such a high percentage of water.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.