I do not have a Tikka in my arsenal but recently I’ve been using DNZ Game Reaper one piece mount/rings on all my rifles. Easiest, most rugged mounts I’ve ever used and I’ve used many over the last 45 years. I checked the DNZ site and they make them for the Tikka T3x, about $68 and change before tax and shipping.
I had ordered a set of Sportsmatch TO48c on 5/11/22. They were backordered at the time and there is only one US retailer that sells them. They indicated that it would be sometime in June or early July. Middle of July I emailed the distributer and got an email back saying there was no expected delivery date. I was unsure how to take that but felt I would wait until the end of September and move on.
Anyway, they arrived Monday evening. Nice mounts but I suspect that that will be difficult to get in the US for a while (if at all).
I ordered from Airguns of Arizona and had a call last Friday saying they had one set come in and if I were still interested they'd send them. As I said, they arrived Monday evening. I thought that was pretty good customer service from AoA.