Most of my Contender barrels have 2X Leupolds for deer. The couple of barrels that have a 2x-7x are used for big & small game. I also use Burris, T/C scopes with 1X, 2X & 3X. I personally don't own a straight 4X ( yet ). I have one 5X Burris that works great on my custom 22 Hornet barrel. The higher power scopes are good for small game & testing loads from a rest. I would match the scope to what game you are going to be hunting and the distance you will be shooting.
GOOD LUCK