Oddities with scope is it me or scope

So I just bought a 6-24×50 Element Helix ffp scope for my impact. In an extended BR shooting session I noticed that if I adjusted the parallax to where target was crisp the reading was ~10 or so yards to much. Ie. 50yards read 60 and 100 read 125.. I also noticed that if I focused on middle of target and adjusted the outer part of scope view was foggy. If I adjust to crisp on outer part middle was foggy. This was there whether I adjusted diopter for no prescription glasses or adjusted diopter with glasses.

I read about Element scopes having super tight eyeboxes and wondered if this might be some of issues.

Any thoughts? DO I need to send it back for warranty work?

Thanks, Steven
 
Regarding the focus knob not matching the distance - this is a known for all scopes. It's just an approximation and not something you can rely on for precision. On one higher tier scope I have there are no distance markings at all. Reason why FT guys range their scope and make their own markings.

Regarding your focus issue - I've seen that in some scopes too. I don't if it mean a lens is just slightly off or if it's just something that is inherent to a scope design. I don't think eye box size has any relation to it.
 
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Regarding the focus knob not matching the distance - this is a known for all scopes. It's just an approximation and not something you can rely on for precision. On one higher tier scope I have there are no distance markings at all. Reason why FT guys range their scope and make their own markings.

Regarding your focus issue - I've seen that in some scopes too. I don't if it mean a lens is just slightly off or if it's just something that is inherent to a scope design. I don't think eye box size has any relation to it.
Thanks for the insight. Guess I will use it a bit more and decide to keep it or not. I do not have that issue with the vortex razor on my powder burner but I do realize it is a tier or 3 above the element helix.