Good choice. Also coming to like the March CT 2.5-25 on my recent 6.5 Sherman build though I don't have much use for the lower end of the power spectrum. Still thinking I like the 4-32 NX8 a little better...reticle, performance, toughness, and turret ergonomics and quality. The March gets a little tight when twisting power past 4x and comes with a plastic throw lever. So many good options.
To answer the holding zero question about the March...my son borrowed my 6.5 Max for a mountain bear hunt. Handed it to a "buddy" to carry while he helped with a downed animal. The "buddy" then clobbered it on the rocks in a fall. Banged up the side turret a bit and some other stuff. My son was pretty upset about it, but not being able to check zero on the spot, he took a crack at a deer at 200 yd on a drive and it rung true. That part is good for sure. It's just little things about it I don't like quite as good as NF.