If you shoot 100 rounds a year I congratulate you on the practice. Most don't. I don't run my main hunting guns that much but I try to shoot a minimum of 1000 rounds a year in 22s and smaller rifles in hunting practice to keep up to date. I can then switch to my hunting guns and have full confidence without burning up the barrel and powder and bullets on a gun hunting rifle
All shooting practise is certainly beneficial but the best practise for hunting is to use a gun with the same trajectory as your hunting rifles.This helps to learn the trajectory better and the correct sight picture and holdover becomes almost automatic with little thinking required.My approach to this has been to hunt with rifles that have almost identical trajectories and to obtain a practise rifle with the same stock,action and trajectory.I use this practise rifle for almost all of my practise to prevent burning out the barrels on my hunting rifles.When the barrel on the practise rifle burns out,I simply rebarrel it.