I have one. My favourite caliber too. 9.3x62 very popular in Europe and Africe but just starting to gain a following in the US. Bacially think of a 35 whelen but better (bigger heavier bullet going faster). Doesn't kick like a mule either just a long firm shove.
Tikka do the T3 Sako does it CZ certianly do it ( they have a new synthetic stock 550 just out for this caliber. Most if not all european rifle makers offer guns in this caliber . It's been around since 1905.
Lapua, S&B, Hornady,Norma, Highland plus others offer loaded ammo for it.
I suspect if you want the Tikka it would be a special order likely a Sako too I suspect. I would be pretty sure CZ has serveral options availible in stock ( they have a lovely full stock CZ550fs).