I had one built in 2019, a Tikka T3x 243 that was rebarreled with an IBI 26" medium hunter 1:7
Shoots very well, just keep the carbon out of the bore or else it gets a little spicy
I have Hornady, Alpha, Peterson and ADG brass.
As good as the round is, I think the 6mm Creed is about the same thing and you can get good ammo, like the 80gr V-Match which is almost identical in performance to the 22cm. And the 22GT might be a bit more sensible in the 22caliber world, less powder and won't build up carbon as quick as the 22cm