Re: Question regarding NF 2.5-10x32 NXS
Parallax on this model is set to 100 yards, and what you experienced is typical.
When I was consistently engaging 500+ during a course, blur was so unbearable I opted to use the ocular focus to see my target, sacrificing reticle focus in the process.
In my opinion, design strengths on the 2.5-10x are compactness, eye-relief/sight picture forgiveness, and smaller sight picture which all optimize rapid target acquisition at sub-500 ranges -- as you discovered.
I've sinced moved it to a dedicated field rifle; if I didn't have this rifle, it would have sold long ago.