If you're got a L.Imp you'll be looking to stretch your legs. 1000, 1500 yards or even a mile. To that end you have to think, how small is a deer/yote/goat going to look at that distance. If you take 1600 yards (for argument sake) and use a 10x glass, it's liek lookign at a target at 1x at 160 yards. To shoot him at 1x would be doable, though he won't look real thick. Take a 16x glass and it looks like 100 yards. Double up the power to 32x and it's more like 50 yards. Would you shoot a deer with a 1x scope at 160? 100? 50? Personally I think you're better with more power than less. If mirage makes the target too hard to see, turn down the power. This is not to say you will for sure take the shot however. I have a 3.5-10x Mark 4 on my LR 300 Winchester and I almost with I'd gone with another 3.5-15 NXS. For a rifle with legs like that, more power is going to give you a major leg up. I may yet switch my 3.5-15 NXS from my LE2B to my M70 "Windero" and the Mark 4 to the LE2B but that's up in the air and a question for another day.
The guys I know that are running L.Imps for LR shooting and hunting are mostly using 8-32x NXS. I don't think that you could go wrong with the 5.5-22x NXS or the 8-32x NXS with the slight nod going to the higher power model.
In the LR Hunting game, optic quality cannot be sacrificed. If you can't see it, you can't shoot it and if you don't have repeatable adjustments, you're wasting your time.