The x bullet works great on deer. Yes they expand perfectly on deer.
No they will not blow a 4" hole in the off side of a deer.

Generally a more explosive bullet like a ballistic tip will drop a deer faster than a controlled expansion bullet like an x bullet.

It is not considered abnormal for a deer shot with an x bullet to travel 20 or 30 yards before falling.

The benefits are if you hit bone, if you have to shoot from a less than perfect angle, if your shot is not perfectly placed. In all these conditions you are better off with the x bullet.

Try the Triple Shocks version of the X. I think you will find them to be accurate and to have excellent terminal performance on deer.

Expecially in your caliber you can also use a lighter bullet because the x loses little bullet weight upon impact. Flatter trajectory and still maximum penetration.