You've invested so much that choosing a lower performance scope for Ritter&Stark 6.5 would be a really bad decision. Hensoldt ZF 3.5-26x56, US Optics, Vortex, S&B PMII 5-25x56 or ATACR 5-25, 7-35x56 are just some of the scopes you should check out. https://outdoorempire.com/finding-best-binocular-reviews/
I would avoid the vx3 for a rifle which you spent that kind of money on. It would be like putting plastic hubcaps on a Ferrari. Apologies to the Leupold fans, but I have them and dislike them.