I own ATACR 5-25 and March 2.5-25, both SFP scopes. I nearly exclusively hunt. First, you cannot go wrong either way. Most obvious difference is weight (14 oz between them). Some other observations:
- March is a shorter scope
- Both have simple reticles that I like (MOAR-T and MTR-3)
- NF used to be my favorite feel for turrets, the March is every bit its equal, perhaps a bit better. This is subjective, of course
- March has a very simple zero stop, no tools. A coin or empty shell casing will do the trick.
- March does have a much more sensitive parallax adjustment. This has been noted by others (see Google). I do not find this to be limiting in any way, but it is very noticeable.
- Eye box on Atacr is just a bit better than March. Again, not limiting from my perspective. Both are very good.
Tracking, glass quality, low light,.... are not distinguishable to me.
Good luck