Between me and my buddies, we've got several NX8's in both the 4-32 & 2.5-20 flavor. I've got a 4-32 on my 7mag hunting rifle with a 2.5-20 on order. Once it comes in, the 4-32 is going on a creedmoor and the 2.5-20 is going on my primary hunting rifle. I am not gentle on that rifle and it has spent countless hours being hiked around mountains, bumping down roads and through pastures on SXS, and just generally beat up. Zero has held since I mounted it on the rifle, no issues at all.
Having the huge zoom is nice, but it's overkill in 99% of the situations I have used that rifle. I'm shaving a few ounces and have the added benifit if a lower 2.5 zoom by switching. For context, I rarely zoom past 10 or so in hunting scenarios.
Also, MRAD. Just make the switch, you'll be glad you did.