Nice thermal clip on, perfect for LPVOs. I have a higher magnification optic so I ended up going in a different direction. Has seen no field use, just function checking at the range. Still works great and under Steiner's warranty. $3300 shipped
Closing this listing as I've since traded this, but to answer your question, the max mag I could really use this with was 8x (and that was a stretch) and the base mag of my scope is 6x. The c35 would be best be served with a scope starting more around 4x or 5x imo.