I tried Monstrum rings but they are a strange color. Switched to Warne and Talley rings and bases. I have some Tikka info on my site at https://theolddeerhunters.com/tikka-t3x-accessories/
I have a lot of thermal reviews on my website and Youtube channel. You can get my thoughts on several thermals and most have videos of hunts.
The Old Deer Hunters. https://theolddeerhunters.com/
The Old Deer Hunters on Youtube. https://www.youtube.com/channel/UCKSZL-CUbG26cRcAyI2tbxw