You're very welcome!
Yeah, I've never had any luck [except for bad] when it comes down to taller mounts/rings..
They'll work, but, then also require me to build up the height on stocks / cheek-mounts, so IMO, counterproductive..
I've had Zero issues with the 50mm with the ocular end..
The Only issue that I ran into was when using an 'ultra short' set of UTG rings..
On the objective [eye] end, the little knob for the magnification ring made contact w/ another add-on-rail that I use..
It's another rail that alters elevation.. If you're not using those though, you'd be good to go.
As far as clarity / glass go..
I have a lifetime hobby in photography also, so when it comes to lenses/optics, I'm very picky..
I actually gave up all of my Nikon glass to go with the VT-T scopes, as IMO they were Very comparible, and price was right.
My club range maxes out at either 300 or 350 yards..
I've used the VT-T scopes out to those rnages [for target] and the clarity was still pretty impressive!
I think that with 140 yards, you should be quite happy with the resulots!
Some people have posted hit/miss reviews, but, most have been pleasently surpriced.
Hey, great price on yours also! I think I was paying about $50 more - Also using Amazon to middle-man them.
[A 'plus' is - If you're able to use "Prime", Amazon also has a nice return policy should there be any issues]

Sam -