I just picked up a CZ 455 Varmint in 1.7HMR and I'm trying to decide what glass to put on it.
You're going to like that 455 Varmint in that chambering.
I wound up putting a 4x16 Bushnell Elite series on mine. For me anyway, this combo of rifle, cartridge and glass quite literally redefined what I had previously believed a rimfire to be capable of.
Good luck with yours!