I would not suggest shooting deer at 150 unless the rifle has a point blank range to that distance. Why not hone hunting skills, get closer, and pass on the long shots? Good camo, move as slow as possible, and then slow down, use scent-blockers and scents, grunt calls, get off the ATV, etc.
:sorry: JUST KIDDING about the ATV!!
But generally speaking, your rifle's maximum range on deer should be the same as your point blank range, accuracy permitting.
I suppose if you had the ladder sights dialed in for every ten yards past your point-blank range, and used a laser rangefinder, that might be ok.
Just a thought.
:imo:
Rat